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Yamaha Zuma 125 battery fitment is a case-code question. Yuasa lists YT7B-BS for Zuma 125 models from 2009 through 2024; the compatible replacements below use the same YT7B-BS or YT7B-4 family. Match the old battery before ordering: the nominal case is about 150 mm long, 65 mm wide and 93–94 mm high. Terminal orientation and bolt size matter as much as voltage, especially with budget replacements. The five products below have current U.S. listings and a stated Zuma 125 or YT7B-BS cross-reference. Do not substitute a YTX7A-BS simply because the label looks similar.
| # | Product | Price | Where to buy |
|---|---|---|---|
| 1 | Yuasa YT7B-BS | $135 | Amazon · eBay |
| 2 | Motobatt MB7U | $70.85 | Amazon · eBay |
| 3 | Power-Sonic PT7B-4 | $59.50 | Amazon · eBay |
| 4 | Chrome Battery YT7B-BS | $31.50 | Amazon · eBay |
| 5 | Mighty Max YT7B-BS | $31.76 | Amazon · eBay |
The picks, in detail
Yuasa YT7B-BS
Yuasa YT7B-BS is the OEM-code choice for Zuma 125 scooters within Yuasa’s listed 2009-2024 range. Its main advantage is avoiding a cross-reference decision when the old battery carries the same YT7B-BS code; the tradeoff is its $135 retail price.
- YT7B-BS fitment code
- Yuasa application guide lists Zuma 125 2009–2024
- 12 V maintenance-free battery
- Direct Yuasa fitment reference
- OEM-style replacement
- Higher retail price
Motobatt MB7U
Motobatt MB7U is an AGM replacement for YT7B-BS with a 151 × 65 × 94 mm case and 100 CCA. Its QuadFlex terminal design supplies extra connection points, useful only if the existing cables and tray accept its 94 mm height.
- MB7U replaces YT7B-BS
- 151 × 65 × 94 mm case
- 100 CCA stated
- Four-terminal design
- Two-year warranty
- Slightly taller than 93 mm OE case
Power-Sonic PT7B-4
Power-Sonic PT7B-4 is the application-guide alternative for Zuma 125 models from 2009-2017. It is a factory-activated AGM option, so it suits a buyer who wants a ready-to-install pack rather than an acid-pack battery.
- PT7B-4 application code
- Power-Sonic Zuma listing
- factory-activated AGM class
- Direct application listing
- Midrange listed price
- Confirm exact model year
Chrome Battery YT7B-BS
Chrome Battery YT7B-BS is the lowest-priced named Zuma listing here and is rated at 85 CCA. Its seller listing specifically names the 2009 Zuma 125, but inspect the supplied terminal bolts because a buyer review reports a fit issue with original cable loops.
- YT7B-BS battery code
- 85 CCA stated
- Walmart Zuma product listing
- Low listed price
- Explicit Zuma listing
- Terminal bolts may need checking
Mighty Max YT7B-BS
Mighty Max YT7B-BS is a 12 V, 6.5 Ah replacement explicitly labelled for the Yamaha Zuma 125. It is a budget option with a vehicle-labelled listing, so the remaining check is the physical terminal hardware included in the box.
- 12 V 6.5 Ah listing
- Home Depot Zuma compatibility label
- YT7B-BS group size
- Lowest listed cost
- Exact vehicle-labelled listing
- Verify supplied terminal hardware
Buying tips
- Confirm the old battery reads YT7B-BS or an explicit replacement code.
- Measure the battery tray before ordering.
- Photograph cable routing and terminal polarity first.
- Check whether a replacement includes acid or arrives activated.
- Use a charger intended for sealed AGM batteries.
- Recycle the removed lead-acid battery.
As an Amazon Associate and eBay Partner, toptenpick.com earns from qualifying purchases. Prices and availability are subject to change.