HMMWV Battery / Requirements

[Retiredwarhorses]

I'm sorry, that is my wholesale price from my Distributor. It's not retail...but yes, that's what I get them for, that also requires cores come back to them as well.
there was a time when the price was through the roof, back in the Early stages of Iraq and Afghanistan that the prices were IIRC 425.00ea...so I went to Optima red tops.

 

[GMVguy]

Man, that's too bad. Anyone got a source for the 6TL's that's under $200? Anything more than that and the Optimas w/adapters seems like the best fit.

 

[porkysplace]

I'm sorry, that is my wholesale price from my Distributor. It's not retail...but yes, that's what I get them for, that also requires cores come back to them as well.
there was a time when the price was through the roof, back in the Early stages of Iraq and Afghanistan that the prices were IIRC 425.00ea...so I went to Optima red tops.

That's what I paid ($125) at General Jims last year . mlacek I would guess even at that price shipping from michigan would wipe out any savings .

 

[GMVguy]

HMMWV Battery Requirements

Can anyone help me out with finding specs needed for the HMMWV batteries? Specifically, what are the Cranking Amp & Cold Cranking Amp (CA & CCA) requirements for the HMMWV? And would a starting-type battery be better, or a deep-cycle? Mine will sit most of the month, so I'm thinking deep-cycle. But the only accessory I'll use that'll draw power is a RoboImpact tool via slave port.

The Optima Deep-Cycle (Yellow-top D34) only has 750 CCA and 870 CA, and the red-top 34 has 800 CCA & 1,000 CA.

Where do I need to be?

 

[Retiredwarhorses]

Optimas red tops or interstate 6TL's...if you go optimas , you will need the battery tray adapter...I have them for 85.00 a set.

 

[greenjeepster]

6tls are spendy just fyi, but if you don't mind putting up the cash I think mil vehicles look best with the original battery configuration. That being said I try and buy trucks with good batteries, but when I have had to replace them I go with civi replacement batteries and adapt the battery box, just because of the cost.

 

[GMVguy]

Optimas red tops or interstate 6TL's...if you go optimas , you will need the battery tray adapter...I have them for 85.00 a set.

Thanks, but I've exhausted all resources for the 6TL's under $200, unless I become a distributor. And I already have the 34 series adapters. So I'm between the yellow-top (deep cycle) and the red-top (starting) group 34s.

Does anyone one have some technical input on the two and its suitability for the Humvee? Basically, the deep-cycle 34 would be better for long periods of sitting (draining), but have lower ratings for CC & CCA's. The red-tops have higher ratings, but won't last as long if there are frequent drain/charge cycles.

I guess it comes down to the question of minimum CA & CCA requirements. What is it for the Humvee?

Thanks,
Matt

 

[greenjeepster]

CCA on the 6tl is 825. Pretty much nothing meets that and still fits the battery box. I just buy group 78 battery's which are just over 10 inch length and put out 800 CCA

 

[Augi]

I just put two yellow tops into my HMMWV and they start it great. I run a bunch of accessories with the truck off sometimes, so I opted for the deep cycle.

There is nothing special about starting the engine... It's just a 6.2/6.5. I presume 6TL's are used on the bigger trucks for commonality of parts. That's where the cranking power is required.

Augi

 

[GMVguy]

I just put two yellow tops into my HMMWV and they start it great. I run a bunch of accessories with the truck off sometimes, so I opted for the deep cycle.

There is nothing special about starting the engine... It's just a 6.2/6.5. I presume 6TL's are used on the bigger trucks for commonality of parts. That's where the cranking power is required.

Augi

Makes sense, thanks. I'm leaning toward the deep-cycle as well due to the frequent draining and charging cycles. I was just concerned about the lower CCAs.

 

[greenjeepster]

The label on the d/c optima says that using them as a cranking battery, voids their warranty.

 

[GMVguy]

I just called Optima and asked for advice. They told me the Yellow-top D34 are dual purpose - designed for starting and deep cycles. I asked about warranty and they said it's 36-months, whether used for starting or not. I'll proceed with getting those, under the assumption that 750 CCA's are enough... unless anyone can advise against that? I tried finding CCA requirements in the TMs to no avail.

 

[ClarkeF]

Red starting or yellow split purpose if you are going to have loads on it without the engine running (radios...). Get the adapter tray - makes them much more secure. Stay away from deep cycle batteries - they are design for low currents over long time - not the heavy demand of a engine crank/start. The yellow are a in-between - thicker plates than the blues to support more current, but able to be partially discharged without impacting life.

 

[GMVguy]

Here's a picture of what I did, in case it helps anyone.