What size batteries/MAHs are you guys running in your M?

m37_power · Post by **m37_power** » Wed Dec 09, 2009 2:55 pm

I need to buy 2 new batteries for my M37 this week and i dont know what size i need. Any help is greatly appreciated.

MSeriesRebuild · Post by **MSeriesRebuild** » Wed Dec 09, 2009 3:20 pm

We always use 2 of the highest amp batteries that we can fit into the box.

m37_power · Post by **m37_power** » Wed Dec 09, 2009 3:24 pm

thats kinda what i was figuring on. i was curious what people were running. i want to make sure i get 2 batteries that are plenty big enough. thanks

Captnsim · Post by **Captnsim** » Thu Dec 10, 2009 7:16 am

I've got two 750 cranking amp battery's in mine and have had no issues.

m37_power · Post by **m37_power** » Thu Dec 10, 2009 8:12 am

ahh..thanks Captnsim

cuz · Post by **cuz** » Thu Dec 10, 2009 8:59 am

The upgrade 6TN batteries in the TB 9-2320-212-20/2 are 11 13/16" long x 10 9/16" wide x 9" high and the closest civvy class battery is a series 24F. Just ask for the highest CCA rated 24F battery on the shelf.

Post by **Monkey Man** » Thu Dec 10, 2009 12:06 pm

I have 2 90Ah glass absorbed batteries in the battery box, being a 12v truck one is sufficient to keep it all running happily, the second one is a backup unit on trickle charge so if I am stupid enough to flatten one accidentally I can jump start my own truck with the flick of a switch, makes for a redundancy factor on the power side of the truck I just have to have.....

Regards - MM

Captnsim · Post by **Captnsim** » Thu Dec 10, 2009 1:08 pm

I use AGM's in my boat due to there ability to be submerged in saltwater. Great battery's. Only drawback is they need to be properly charged or the life expectancy can be shortened dramatically.
Another thing about AGM's is long term storage characteristics. They only lose 1% to 3% charge a month...verses 1% average drop a day with standard wet cell battery's.

HingsingM37 · Post by **HingsingM37** » Sat Dec 12, 2009 4:51 am

I used two Interstate MT51's

jbxx · Post by **jbxx** » Thu Dec 17, 2009 12:01 pm

I'm going to be a smart a$$ here
MT 51 Interstates are rated at 500,000 mAH CCA
or 650,000 mAH starting.
Sorry, couldn't resist.
J.B.