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HMMWV Battery / Requirements

GMVguy

Member
178
22
18
Location
Utah
Having trouble finding replacement Interstate 6TL batteries for my M998. The ones recommended in other thread's aren't available around me. Just Walmart and auto parts stores. Are there any common, readily available batteries that will work as good or better than the 6TL?
 

V8Merc124

New member
24
2
3
Location
Modesto California
Are you looking for the correct military replacement? I used a pair of Interstate MTP 78's. About $125 each at my local mom'n'pop tractor parts store. I couldn't find anything local aside from that.
 

GMVguy

Member
178
22
18
Location
Utah
Yeah I haven't been able to find anything local... Guess I gotta place an order and wait.
 

GMVguy

Member
178
22
18
Location
Utah
Are you looking for the correct military replacement? I used a pair of Interstate MTP 78's. About $125 each at my local mom'n'pop tractor parts store. I couldn't find anything local aside from that.
No, just trying to find something local that has the same dimensions and at least the same specs. Would like to use the original brackets.
 

doghead

4 Star General /Moderator
Staff member
Super Moderator
Steel Soldiers Supporter
26,247
1,168
113
Location
NY
Napa, or most of the chain store can get them.

Find an interstate dealer.

Google, "6tl battery"
 

Retiredwarhorses

Well-known member
Steel Soldiers Supporter
4,261
3,874
113
Location
Brentwood, Calif
The 6TL prices seem to be all over the place IMHO....I always used them in my HMMWV's till the price went through the roof several years ago...these were alway from my supplier, so at that time I went with Optima Red tops and used the adapter trays so they sit in the battery tray meant for the 6TL battery foot print. Over time I found the optimas were junk.
i loose optimas in a truck in about 2-3yrs, I had a set of 6TL's in my slant back last 7yrs!
They do require maint though....now I can get 6TL again for 125.00 ea....so that's what I buy.
 

KansasBobcat

Member
641
8
18
Location
San Antonio, TX
I went with optima red tops on adaptor trays. Only problem was that the GI terminals tended to rise as I tightened them. I think there is more taper on optima posts. I have had good luck with Optimas in other vehicles. Much lighter than 6TLs!
 

GMVguy

Member
178
22
18
Location
Utah
I noticed the O'Reilly and Napa 6TL's have lower rated Cranking Amps (and Cold Cranking Amps) than the original military 6TLs. That ok?
 

GMVguy

Member
178
22
18
Location
Utah
The 6TL prices seem to be all over the place IMHO....I always used them in my HMMWV's till the price went through the roof several years ago...these were alway from my supplier, so at that time I went with Optima Red tops and used the adapter trays so they sit in the battery tray meant for the 6TL battery foot print. Over time I found the optimas were junk.
i loose optimas in a truck in about 2-3yrs, I had a set of 6TL's in my slant back last 7yrs!
They do require maint though....now I can get 6TL again for 125.00 ea....so that's what I buy.
Where do you get your 6TLs for $125?
 
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