Odyssey Extreme G31 AGM Battery, 1150A CCA, 103Ah
- Brand:
- Odyssey
- Part no:
- ODX-AGM31M
Image: Fisheries Supply
Where to buy
Specifications
- Chemistry
- AGM
- Voltage
- 12 V
- Dimensions (L x W x H)
- 13" x 6.8" x 8.9"
- BCI group
- 31
- Capacity
- 103Ah (20 hour rate)
- Cold cranking amps
- 1150 A
- Reserve capacity
- 220 min
- Mounting orientation
- Any position except inverted
- Warranty
- Up to 4-year limited full replacement
Manuals
- Installation and maintenance manual (PDF)www.enersys.com
The Odyssey Extreme G31 is a 12V, Group 31 AGM battery rated at 1150A CCA and 103Ah. Its flat plates are made of 99% pure lead, and the sealed, non-spillable case can be mounted on any side or position except inverted. Odyssey rates it for 400 charge-discharge cycles to 80% depth of discharge and says it can recharge fully in 4 to 6 hours. The warranty is up to 4 years of limited full replacement.
Our take
The 1150A CCA rating on this Group 31 AGM is the figure for cold starts, with 103Ah of capacity behind it. The plates are 99% pure lead, and it is rated for 400 cycles to 80% depth of discharge, so it is built to be drawn down and recharged.
From our buying guide
A starting battery delivers a short burst of strong power, a deep-cycle battery a low, steady level for longer, and a dual-purpose battery a balance of the two. Buy for the job it will do.
Check before you buy:
- You've measured the tray against the maker's real dimensions, since a BCI group gives maximum sizes and some batteries sold as a drop-in run longer.
- You're comparing the same rating. Cold cranking amps are tested at 0°F and cranking amps at 32°F, so the second number is higher.
- If it's lithium, the maker says whether it may start an engine, and NMMA advises contacting your boat's manufacturer or a certified technician before replacing lead-acid.