Kawasaki KZ1000A/J Battery
1977–1983. Kawasaki changed the KZ1000A/J's battery once across the run. Pick your year and we show the case that year takes and the lithium that fits it. Change any box in the strip to look up another bike.
1983 Kawasaki KZ1000A/J
- OEM battery
- YTX20L-BSYuasa 2026 OEM guide
- Case family
- YTX20L12V starter case
- This battery fits
- 1981–1983other years take a different case
The Kawasaki KZ1000A/J takes the YTX20L-BS case. The Antigravity ATX20 RE-START is a drop-in for that case: 680 cranking amps, 4 lb, a built-in jump start that saves enough charge to get you home.
See the Antigravity ATX20
KZ1000A/J battery by model year
| Model years | OEM battery | Where it comes from | Lithium that fits |
|---|---|---|---|
| 1977–1980 | OEM batteryYTX14AHL-BS12V starter case | Where it comes fromYuasa 2026 OEM guide | Lithium that fitsAntigravity ATX12-AH RE-START → |
| 1981–1983Your year · 1983 | OEM batteryYTX20L-BS12V starter case | Where it comes fromYuasa 2026 OEM guide | Lithium that fitsAntigravity ATX20 RE-START →Antigravity ATX20-HD →Ionic S6 → |
Trim covered: KZ1000A/J.
Shop all Kawasaki batteriesWhy the year matters on this one
The KZ1000A/J is a motorcycle where the battery changed mid-run: 1977 to 1980 takes the YTX14AHL-BS and 1981 to 1983 the YTX20L-BS. The plate above names the source for each year, and the table shows every run we have on file, so match the year to the case before you order.
For 1981 to 1983 that means the Antigravity ATX20 RE-START: 680 cranking amps, 4 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.