Skipper's Locker

Odyssey ODP-AGM34M 12V AGM Marine Battery, 810 CCA

Brand:
Odyssey
Part no:
ODP-AGM34M

Where to buy

Specifications

Chemistry
AGM
Voltage
12 V
Dimensions (L x W x H)
10.9 x 6.8 x 7.2 in
Terminals
SAE/Marine
Cold cranking amps
810 A

Manuals

The Odyssey ODP-AGM34M is a 12 volt AGM battery from the Performance Marine Series, rated at 810 CCA and fitted with SAE/marine terminals. The maker lists it as lead acid with AGM-TPPL technology. The case measures 10.9 x 6.8 x 7.2 inches (275 x 172 x 187 mm) and the battery weighs 47 lb (21.5 kg).

Our take

The ODP-AGM34M is rated at 810 CCA and weighs 47 lb in a case 10.9 inches long, so measure your tray and hold-down against that footprint and plan how you will lift it into place.

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.

Sources