The New Holland 8770A tractor battery spec found is 12 V, Group 31, with 850 CCA.
Voltage12 V
Group size31
Cold cranking amps850 CCA
New Holland 8770A Battery Size Details
Replacement battery recommendation
12 V, 850 CCA – Group 31
Battery voltage
12 V
Battery group size
31
Battery CCA
850 CCA
Battery CCA Comparison Chart
Battery CCA comparison
This model
850 CCA
Average
850 CCA
Low
650 CCA
High
1,100 CCA
Benchmarks use practical low, average and high cold-cranking-amp ranges for the utility tractor category. Use the exact battery label and manual before buying.
New Holland 8770A Extra Battery Notes
Replacement note
For the New Holland 8770A, match the replacement battery to the captured spec: 12 V, Group 31, 850 CCA. Physical fit, terminal layout and hold-down fit still matter
Battery location
The battery on the New Holland 8770 tractor is typically located under the seat on the right-hand side of the cab
Battery replacement steps
To replace the battery on a New Holland 8770A tractor, first disconnect the negative (black) terminal followed by the positive (red) terminal. Then, remove the old battery, place the new battery in the compartment, and reconnect the terminals in the reverse order, starting with the positive terminal
Bad battery symptoms
New Holland 8770 owners report dead batteries within two weeks even after replacement, often caused by a slow-drain “KAM” 5A fuse that powers the dash and radio presets when the tractor sits unused for weeks
Safe removal note
Disconnect the negative cable first, then disconnect the positive cable. Install the new battery, connect the positive cable first, then reconnect the negative cable last. That reduces the chance of shorting a tool against the frame
Official information note
Mistakes do happen. Battery specs can change by year, engine, market, terminal layout and installed options. Check the old battery label, operator manual, parts book and official newholland.com website before ordering a replacement battery.
