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Yamaha XS750 Battery

1977–1979. The OEM battery case the XS750 takes, the lithium that drops into it, and every model year we have on file. One case across the whole run.

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1979 Yamaha XS750

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OEM battery
YTX14AHL-BSYuasa 2026 OEM guide
Case family
YTX14AL12V starter case
Fits all years
1977–1979same case every year on file

The Yamaha XS750 takes the YTX14AHL-BS case. The Antigravity ATX12-AH RE-START is a drop-in for that case: 360 cranking amps, 3 lb, a built-in jump start that saves enough charge to get you home.

See the Antigravity ATX12-AH
Fits your bike
360CA
Antigravity ATX12-AH 12V Motorcycle Battery 360CA (w/ Re-Start)Starter
Antigravity

Antigravity ATX12-AH 12V Motorcycle Battery 360CA (w/ Re-Start)

12V·360CA·3 lb
RE-START
$250
$330Save $80
3-yr warranty · Free Shipping

XS750 battery by model year

1977–1979Your year · 1979OEM batteryYTX14AHL-BS12V starter caseWhere it comes fromYuasa 2026 OEM guideLithium that fitsAntigravity ATX12-AH RE-START →

Trim covered: XS750.

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What the XS750 needs, in plain English

Every XS750 from the first 1977 model through 1979 starts on the YTX14AHL-BS case, a 12-volt starter battery. Yamaha ships it with a lead-acid battery that starts to fade after two or three seasons of short rides and off-season storage, and that is usually the day a rider goes looking for something better.

The lithium drop-in is the Antigravity ATX12-AH RE-START: 360 cranking amps, 3 pounds, the same case in lithium. Its RE-START function puts the battery to sleep before a parasitic draw can drain it, then wakes it with one press for a jump start. Charge it with a lithium-compatible charger or maintainer for the off-season and it outlasts the lead-acid battery it replaces by years.

What size battery does a Yamaha XS750 take?+
The YTX14AHL-BS case, the same one on every XS750 from 1977 to 1979. The Antigravity ATX12-AH RE-START is the lithium drop-in for it.
Will a lithium battery work in an XS750 without changes?+
Yes, on a bike with a healthy charging system: the lithium battery uses the same case, the same posts and the same cables, and it drops in where the lead-acid battery sat. Bikes older than about 2000 should have their voltage regulator and rectifier checked first, since a failing one overcharges any battery and lithium tolerates it less. Fill any gap in the tray with the foam spacers most lithium motorcycle batteries include.
Do I need a different charger for a lithium motorcycle battery?+
Use a charger or maintainer with a lithium (LiFePO4) mode. A lead-acid trickle charger can push the wrong voltage profile, and a desulfation mode can damage a lithium pack. A lithium-profile maintainer over the off-season keeps it topped without harm, and the battery loses only a few percent of charge a month sitting on its own.