Best 725-17335 Lawn Mower Battery: Top 6 Picks (November 2026)
The best 725-17335 lawn mower batteries include the MARXON U1 Riding Lawn Mower Batteries Garden for a direct U1 replacement, the UPLUS U1 Riding Lawn Mower Battery for U1 mower fit checks, and the MARXON U1 Riding Lawn Mower Battery for higher starting output.
On this page (4 sections)
The best 725-17335 lawn mower battery replacement is the MARXON U1 280CCA battery when your mower uses a 12V U1 battery with positive on the left, negative on the right, and a case close to 7.68 x 4.92 x 6.14 inches.
That match of voltage, size, and polarity is what makes it the clearest first choice for many riding mowers. It also suits shoppers who want a straightforward U1 replacement without moving to a taller or wider case.
The MARXON 360 CCA version is another strong U1 option when the same case and terminal layout fit your mower. It gives you a higher stated starting rating, but the physical fit still comes first.
The compact batteries in this guide are for different mower designs. They can be right for a small walk-behind mower, yet they will not fill a U1 tray or match U1 cable positions.
Part numbers help narrow the search, but they do not replace a physical fit check. Two batteries can share a voltage and still differ in height, width, terminal side, or terminal style.
Before buying a 725-17335 lawn mower battery, compare the old battery's voltage, dimensions, terminal direction, and cable reach. Measure the tray as well, and leave room for the hold-down and hood.
This check matters most with riding mowers, where a battery that is close in length may still be too tall. A tight compartment also leaves less room for the cables to bend without strain.
If your mower uses a smaller battery, use its exact measurements instead of forcing a U1 choice. The right replacement should sit securely and connect without stretching or crossing the cables.
If your mower uses the common U1 format, see our guide to the best U1 lawn mower battery. For a different battery chemistry, compare the best AGM lawn mower batteries.
Use those guides after you have confirmed the basic fit for your mower. They can help you compare options once voltage, size, and polarity already match.
Our picks at a glance
-
1
Best for a direct U1 replacementMARXON U1 Riding Lawn Mower Batteries Garden
9.6/10 our score
See it on Amazon -
2
-
3
Best for higher starting outputMARXON U1 Riding Lawn Mower Battery
9.4/10 our score
See it on Amazon
- 4
Check itExpertPower EXP1223-2.3Ah 12V Battery Rechargeable SLA AGM
Best for compact 12V equipment - 5
Check itMighty Max Battery YTX4L-BS Replacement for Snapper
Best for small walk-behind mowers - 6
Best for 350 CCA U1 needsCheck it
Which 725-17335 lawn mower battery is the best match?
The MARXON U1 280CCA is the best starting point for most 725-17335 replacement searches because its U1 format, 12V rating, dimensions, and left-positive layout are clearly stated.
That clarity helps when you are comparing an old battery with a new one. You can check the case size and terminal direction before you think about CCA or capacity.
The MARXON 360 CCA battery uses the same stated main dimensions but gives you a higher CCA rating. It is a sensible alternative when your mower accepts that U1 case and you want more stated starting output.
We compared the stated size, voltage, polarity, battery type, terminals, CCA, and intended mower use. Height matters here because a taller battery can clash with a hood or hold-down bracket.
UPLUS and Energizer also use U1-style formats, but their stated heights are greater than the MARXON cases. That extra height can be fine in a roomy tray and a problem in a shallow one.
The ExpertPower and Mighty Max options are much smaller and use different terminal arrangements. They suit compact equipment, not a standard U1 compartment.
Our score weighs specs, features, and buyer feedback against what you are shopping for. It does not override the need to measure your own battery tray.
A higher CCA or capacity figure is useful only after the battery physically fits. If the case or cables do not match, a stronger rating will not fix the problem.
| Product | Best for | Voltage | CCA | Size | Our score |
|---|---|---|---|---|---|
| MARXON U1 Riding Lawn Mower Batteries Garden | a direct U1 replacement | 12V | 280 | 7.68 x 4.92 x 6.14 in | 9.6 |
| UPLUS U1 Riding Lawn Mower Battery | U1 mower fit checks | 12V | 7.68 x 4.92 x 6.93 in | 9.4 | |
| MARXON U1 Riding Lawn Mower Battery | higher starting output | 12V | 360 | 7.68 x 4.92 x 6.14 in | 9.4 |
| ExpertPower EXP1223-2.3Ah 12V Battery Rechargeable SLA AGM | compact 12V equipment | 12V | 9.1 | ||
| Mighty Max Battery YTX4L-BS Replacement for Snapper | small walk-behind mowers | 12V | 50 | 4.40 x 2.90 x 3.42 in | 8.9 |
| Energizer EN-U1-350-GEL | 350 CCA U1 needs | 12V | 350 | 7.74 x 5.13 x 6.92 in | 8.7 |
MARXON U1 Riding Lawn Mower Batteries Garden: Best for a direct U1 replacement
- 12V
- 280 CCA
- 7.68 x 4.92 x 6.14 in
- Left-positive polarity
- SLA battery
This U1 battery matches the common physical format used for many riding mowers. Its 280 CCA rating and left-positive layout make it the strongest first choice when your old battery has the same measurements.
Pros
- 280 CCA
- Maintenance-free design
- Battery and screws included
Cons
- Confirm the tray size and polarity
- Only the battery and screws are included
The MARXON U1 280CCA is the best fit in this group for a standard U1 replacement search. It measures 7.68 x 4.92 x 6.14 inches, uses 12V power and places the positive terminal on the left and the negative terminal on the right.
Its 280 CCA rating gives you a clear reference when comparing the old battery. The sealed lead acid design is maintenance-free, so you don't add acid or water during normal use.
The battery and screws are included. That means you should reuse or separately source any mounting parts or cable hardware your mower needs beyond those items.
MARXON also states that the battery uses shockproof material and a corrosion-resistant alloy. Those features may suit outdoor mower storage, but the battery still needs clean, tight connections and protection from avoidable moisture.
Choose this pick when your old battery matches the U1 measurements and left-positive polarity. Measure the tray before ordering, especially if a hold-down bracket sits close to the case.
UPLUS U1 Riding Lawn Mower Battery: Best for U1 mower fit checks
- 12V
- 23Ah
- 280 CCA
- 7.68 x 4.92 x 6.93 in
- Left-positive polarity
UPLUS gives you a 12V U1 AGM battery with 23Ah capacity and 280 CCA. It suits shoppers who want a taller U1 option and need to match the battery compartment carefully.
Pros
- 23Ah capacity
- 280 CCA
- Maintenance-free AGM design
Cons
- Taller than some U1 batteries
- Check the 6.93 in height
The UPLUS U1 is a good choice when you need a 12V, 23Ah and 280 CCA battery with a U1 footprint. Its stated dimensions are 7.68 x 4.92 x 6.93 inches, making it taller than the MARXON 280CCA battery above.
The positive terminal is on the left and the negative terminal is on the right. Check that extra height against the hood, bracket and cable path before choosing it for part 725-17335.
UPLUS describes this as a sealed lead acid AGM battery with a maintenance-free design. The brand also names John Deere, Cub Cadet, Husqvarna, Craftsman, Toro, Ariens, Poulan Pro and Troy-Bilt among compatible mower brands.
Keep the terminals tight and inspect them regularly. UPLUS recommends monthly visual checks, occasional terminal cleaning and full charging during storage because deep discharge can shorten battery life.
Choose this battery when the 6.93-inch height fits your mower. If your compartment is lower, use the shorter MARXON U1 dimensions as your comparison point.
MARXON U1 Riding Lawn Mower Battery: Best for higher starting output
- 12V
- 360 CCA
- 7.68 x 4.92 x 6.14 in
- Left-positive polarity
- SLA battery
This MARXON U1 uses the same listed length, width and height as the 280 CCA MARXON, but raises the stated cranking output to 360 CCA. It is a useful choice when your mower and cables match the U1 layout.
Pros
- Highest CCA among the U1-sized picks
- Left-positive polarity
- Maintenance-free design
Cons
- Confirm the mower's required battery rating
- Battery and screws only
The MARXON U1-4-P is the best choice here when your mower accepts the same U1 dimensions but you prefer 360 CCA. It measures 7.68 x 4.92 x 6.14 inches and uses positive on the left and negative on the right.
That 360 CCA rating is higher than the 280 CCA ratings of the first two picks. A higher number does not make it a universal replacement, so confirm the mower's required size and terminal layout first.
MARXON names several mower applications, including EZtrak Z425, Craftsman 25780, Cub Cadet LTX 1046 KW, Craftsman ZT7000, Wheel Horse 418, Ariens Pro Master 300 Series, Toro Timecutter Z5000 and several other brands and models.
The sealed lead acid battery is rechargeable and maintenance-free. The battery and screws are included, while other mounting accessories are not stated as included.
Choose it when your old battery has the same U1 case and cable direction. For Husqvarna-specific options, our guide to best replacement batteries for Husqvarna lawn mowers gives you another comparison route.
ExpertPower EXP1223-2.3Ah 12V Battery Rechargeable SLA AGM: Best for compact 12V equipment
- 12V
- 2.3Ah
- 7.01 x 1.38 x 2.40 in
- F1 terminals
- SLA AGM
The EXP1223 is a narrow 12V AGM battery for compatible small systems, trimmers and some mower applications. Its compact shape makes it a poor substitute for a full-size U1 unless your original battery has the same format.
Pros
- Compact body
- F1 terminals
- Rechargeable AGM design
Cons
- Only 2.3Ah
- Not a full-size U1 battery
The ExpertPower EXP1223-2.3Ah is best for a compatible compact 12V system, not as a default replacement for a full-size U1 mower battery. Its case measures about 7.01 x 1.38 x 2.40 inches, with a total height of 2.64 inches including the F1 terminals.
It has 2.3Ah capacity and sealed lead acid AGM construction. F1 terminals support compatible connections, and the battery is factory activated for use in suitable 12V systems.
ExpertPower names lawn mowers, string trimmers, alarm systems, small UPS units, emergency lights and exit signs as possible uses. It also describes compatibility with several 12V battery models, including UB1223, DURA12-2.3F, NP2.3-12 and PS-1223.
The narrow body is the key trade-off. It may fit a mower designed for this battery style, but it will not fill a U1 tray or match U1 cable positions automatically.
Choose this battery only after comparing the old battery's dimensions and F1 terminal type. A 12V label alone does not confirm a replacement.
Mighty Max Battery YTX4L-BS Replacement for Snapper: Best for small walk-behind mowers
- 12V
- 3Ah
- 50 CCA
- 4.40 x 2.90 x 3.42 in
- Right-positive polarity
This compact YTX4L-BS battery is intended as a Snapper push lawn mower replacement. Its smaller case and right-positive layout make it a different choice from the U1 batteries used by many riding mowers.
Pros
- Compact size
- 3Ah capacity
- Rechargeable SLA design
Cons
- Only 50 CCA
- No wire harness or mounting accessories
The Mighty Max YTX4L-BS is best for a small Snapper push lawn mower that uses this compact battery format. It measures about 4.40 x 2.90 x 3.42 inches, has 3Ah capacity and produces 50 CCA.
Its polarity is negative on the left and positive on the right, which is the reverse of the MARXON and UPLUS U1 layout. The battery and screws are included, but no wire harness or mounting accessories are included.
The sealed lead acid battery is rechargeable and designed to resist shocks and vibration. Its smaller case makes it easier to place in a compact battery compartment, but it cannot replace a U1 battery without a matching tray and cable setup.
Mighty Max describes this model as a replacement for Snapper push lawnmowers and walk-behind lawn mowers. Confirm the exact model and terminal direction before using it for a 725-17335 search.
Choose it when your old battery is a YTX4L-BS with the same dimensions and polarity. For general mower repair steps, use our guide on How to Change a Riding Mower Battery?.
Energizer EN-U1-350-GEL: Best for 350 CCA U1 needs
- 12V
- 350 CCA
- 7.74 x 5.13 x 6.92 in
- GEL battery
- Nut and bolt terminals
The Energizer EN-U1-350-GEL offers 350 CCA in a U1-style battery with nut and bolt terminals. Choose it only after checking the larger stated dimensions and your mower's cable connection.
Pros
- 350 CCA
- GEL construction
- Nut and bolt terminals
Cons
- Wider and taller than some U1 batteries
- No wire harness or mounting accessories
The Energizer EN-U1-350-GEL is a U1-style option for shoppers who want 350 CCA and a GEL battery. Its stated dimensions are 7.74 inches deep, 5.13 inches wide and 6.92 inches high.
Those measurements are larger than the 7.68 x 4.92 x 6.14-inch MARXON U1 batteries. Check the battery tray, hood clearance and terminal position before choosing it for part 725-17335.
The battery uses 12V power and includes nut and bolt terminals. Energizer states that it can be mounted in any position except upside down, and that the battery is intended for tractors, lawn mowers and other equipment.
Only the battery is included. A wire harness and mounting accessories are not included, so keep the old hardware if it remains safe and compatible.
Choose this model when the extra height and width fit and your mower's terminals connect securely. Its 350 CCA sits between the MARXON 280 and MARXON 360 choices.
How do you choose a 725-17335 lawn mower battery?
Choose a 725-17335 replacement by matching five details in this order: voltage, case size, terminal position, terminal style and mower fit. CCA and capacity matter after the battery physically matches the mower.
Match voltage before CCA
All six products in this roundup use 12V power, but that does not make them interchangeable. A battery can have the right voltage and still be too tall, too narrow, or wired with the terminals on the wrong sides.
Start with the voltage because your mower's starter and charging system are built for a specific rating. A 12V battery is the match here, yet voltage alone tells you very little about fit.
Next, measure the case in length, width, and height. U1 batteries take up much more space than the compact ExpertPower and Mighty Max batteries.
Check the tray and the parts around it, including the hold-down bracket, hood, and cable path. A battery can fit the floor of the tray and still sit too high under the cover.
Then confirm polarity by standing at the terminals of the old battery. The MARXON and UPLUS U1 options use positive on the left and negative on the right.
The Mighty Max YTX4L-BS uses the opposite layout, with negative on the left and positive on the right. That difference can stop a compact battery from working as a direct swap.
Terminal style is the next check. The ExpertPower uses F1 terminals, while the Energizer uses nut and bolt terminals, so your cables need to match the type you choose.
Use the old battery label and mower manual as your first references. If they disagree, measure the installed battery and inspect the cable route before ordering.
CCA and capacity come after these physical checks. They help you compare starting output and stored charge, but they cannot make an oversized or reversed battery fit.
Measure the battery tray
U1 batteries commonly take more room than compact YTX4L-BS or EXP1223 batteries. The MARXON U1 options measure 7.68 x 4.92 x 6.14 inches, while the UPLUS reaches 6.93 inches in height.
Leave room for the battery hold-down, hood and cable bend. A case that fits lengthwise may still interfere with the mower cover or bracket.
Check polarity and terminals
The MARXON and UPLUS U1 batteries use positive on the left and negative on the right. The Mighty Max YTX4L-BS uses negative on the left and positive on the right.
Terminal type also matters. The ExpertPower uses F1 terminals, while the Energizer uses nut and bolt terminals.
Your mower cables need to reach and tighten without strain.
Decide how much CCA you need
CCA gives you a useful comparison between starting batteries. The picks here range from 50 CCA on the compact Mighty Max to 360 CCA on the MARXON U1-4-P.
More CCA is not a substitute for fit. Choose the higher rating only when the battery matches the mower's voltage, tray, terminals and cable layout.
How should you install and care for the replacement?
Install the replacement with the mower off, the key removed, and the battery cables identified before loosening anything. Take a photo of the old battery in place if that helps you remember the cable order and routing.
Disconnect the negative cable first, then the positive cable, and reverse that order when reconnecting the new battery. This order reduces the chance of a short circuit during the swap.
Lift the old battery out by the case or a carry handle, not by the cables. Set it upright on a clean surface and keep the terminals away from metal tools.
Compare the new and old batteries side by side before fitting either one. Check voltage, case size, terminal side, and terminal style while both batteries are on the bench.
If the cables need stretching, twisting, or crossing to reach the new terminals, stop and recheck the battery model. A correct replacement should connect with a natural bend and without pulling on the cable ends.
Seat the battery firmly in the tray and fit the hold-down so the case cannot shift. Movement during mowing can loosen connections and wear the terminals over time.
Connect the positive cable first, then the negative cable, and tighten each terminal so it does not turn by hand. Clean terminals give the starter a better path and help the battery charge without added resistance.
Keep the terminals clean and tight throughout the season. Corrosion can build up quickly in outdoor storage, especially where moisture collects around the battery compartment.
Follow the battery's charging instructions and use a charger suitable for the battery type. UPLUS advises fully charging idle batteries and storing them in a cool, dry environment at about 68°F.
Monthly checks are a simple habit for sealed batteries. Look for loose hardware, corrosion, case damage, and cable wear before the mower needs to start.
Store a spare or seasonal battery upright in a cool, dry place. A deeply discharged battery can lose performance, so charge it before putting it away for a long break.
For related engine maintenance, see How To Replace Muffler On Craftsman Lawn Mower?. If you need a parts source, read Who Sales Craftsman Lawn Mower Parts?.
What is the final pick for part 725-17335?
The MARXON U1 280CCA is the best first choice when your mower uses a 12V U1 battery with the same 7.68 x 4.92 x 6.14-inch case and left-positive layout.
It suits riders who want a direct U1 replacement with a familiar footprint. Its maintenance-free sealed design also means no acid or water to add during normal use.
Pick the MARXON 360 CCA version if those physical details match and you want the higher stated starting output. It uses the same main case size, so it is a natural step up when fit is already confirmed.
Choose UPLUS when its 23Ah capacity and 6.93-inch height suit your battery compartment. It also uses left-positive polarity, but the extra height needs clearance under the hood and hold-down.
Pick Energizer for a compatible larger U1-style space and 350 CCA. Its nut and bolt terminals and GEL construction are useful, yet its wider and taller case may not fit every U1 tray.
Use ExpertPower or Mighty Max only when your mower already uses their compact battery formats. The ExpertPower is narrow with F1 terminals, while the Mighty Max is a small YTX4L-BS with right-positive polarity.
Those compact picks are not upgrades for a U1 tray. They are replacements for mowers designed around their smaller cases and cable layouts.
The safest order is to measure first, then compare CCA and capacity. Once voltage, size, polarity, and terminals match, the higher-rated U1 option becomes a reasonable choice.
Our top 3 picks at a glance
-
1
Best for a direct U1 replacement
MARXON U1 Riding Lawn Mower Batteries Garden
9.6/10 our score
See it on Amazon -
2
-
3
Best for higher starting output
MARXON U1 Riding Lawn Mower Battery
9.4/10 our score
See it on Amazon
Frequently asked questions
What is the best 725-17335 lawn mower battery?
The MARXON U1 280CCA battery is the strongest first match among these picks because it has a 12V rating, U1 format, 280 CCA, left-positive polarity and dimensions of 7.68 x 4.92 x 6.14 inches.
Confirm those details against your old battery before ordering.
Is part 725-17335 the same as a U1 battery?
Part 725-17335 may require a battery with a U1-style fit, but the part number alone is not enough to confirm compatibility. Match voltage, case dimensions, terminal direction and cable reach with the battery already installed in your mower.
A U1 label does not remove the need to check polarity.
What battery size replaces 725-17335?
The U1 batteries in this guide measure about 7.68 x 4.92 x 6.14 inches, while the Energizer measures 7.74 x 5.13 x 6.92 inches. Use the exact dimensions of your mower tray, including height and terminal clearance.
The compact ExpertPower and Mighty Max batteries have different formats.
How do you check lawn mower battery polarity?
Stand at the battery terminals and identify which side is positive and which is negative. The MARXON and UPLUS U1 options here use positive on the left and negative on the right, while the Mighty Max YTX4L-BS uses negative on the left and positive on the right.
Match the cable layout before installation.
Can you use a higher CCA lawn mower battery?
A higher CCA battery can be suitable when voltage, case size, terminals and polarity all match the mower. The MARXON U1-4-P has 360 CCA, while the MARXON U1-280 has 280 CCA.
Do not choose by CCA alone if the battery will not fit or the cables cannot reach.
