PRC-77 Battery Replacement
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- Sergeant Major of the Gee
- Posts: 254
- Joined: Mon Feb 20, 2012 5:37 am
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PRC-77 Battery Replacement
Well i followed the youtube video on how to make a replacement battery and got the same lead acid battery as in the video and charged it up....built the adapter and put it in and voila!!!!! nothing... Now i know the radio works fine and i even tested it on another 77.....is the 13.3 volts not enough to run the radio. Anyone else have this issue?
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- G-Sergeant First Class
- Posts: 77
- Joined: Fri Jul 30, 2010 9:11 pm
- Location: Loudonville, Ohio
Re: PRC-77 Battery Replacement
Are you sure it's a 77? I run two 6V lead acids in series in mine and everything is fine. If it's actually a 25 (open it up and look for the single vacuum tube), then it's not going to work. Past that you have the wrong pins wired and/or wired backwards. Follow the markings on an original battery for the proper connections.
1989 M998
1964 M151 w/1967 M416
1986 M1009
1964 M151 w/1967 M416
1986 M1009
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- Sergeant Major of the Gee
- Posts: 397
- Joined: Sun Nov 30, 2003 9:02 am
- Location: Florida
Re: PRC-77 Battery Replacement
I agree with Snook I can run my PRC77 on a 12 volt lead acid cell used for alarms but it wont fit in the battery box If you have a PRC25 it wont work because you need a separate 3 volts for the filament of the tube You might look and locate a BB586 which is the rechargeable NiCad battery for the 77 They arrnt too common I have to replace some cells in mine
M416
1954 M38A1
1954 M38A1
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