charging kinetik batteries question

[gqjeff 10+ year member]

My sons 2 HC800 set idle for like 4 months.. Last night I tried hooking them up to the charger and 5 hrs later they only read 6.7 volts. Are they no good or do I need a special charger for them? I have never had a problem charging batts before but these things will not budge.

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[DBBOOM 10+ year member]

Tried to trickle charge them for a day or so?

 

[PIITB Wut Wut 10+ year member]

another 1 bites the dust... lol how many amps was it charging them at?

 

[gqjeff 10+ year member]

Ok.. I will try that. I am going to run up to our cabin today and grab our stage 3 charger and try them on that also. It looks to be like the one kinetik sells also. I hope it works these batts are only 9 months old.

 

[gqjeff 10+ year member]

another 1 bites the dust... lol how many amps was it charging them at?

The charger I was using I was at 12 amps... The one I am going to get at my cabin does like 2-12 and 20 amps and also battery reconditioning.

 

[PIITB Wut Wut 10+ year member]

kinetik charger is awsome... get one.. on ebay for 109 brand new... fully automatic.

 

[DBBOOM 10+ year member]

Ok.. I will try that. I am going to run up to our cabin today and grab our stage 3 charger and try them on that also. It looks to be like the one kinetik sells also. I hope it works these batts are only 9 months old.

I have a couple of the HC800s in my boat, hooked to an isolator. I have discharged them to around 9v before. They have always came back up for me and they are a little over a year old. Good luck, let us know what happens with them.

 

[gqjeff 10+ year member]

the one I have is not the kinetik version but seems to be the exact charger I have for charging my deep cell boat batteries...

 

[gqjeff 10+ year member]

I have a couple of the HC800s in my boat, hooked to an isolator. I have discharged them to around 9v before. They have always came back up for me and they are a little over a year old. Good luck, let us know what happens with them.

Just dropped a 2400 in my wakeboard boat.. Def will report back hopefully this other charger does the trick.. think I will do the battery reconditioning on them...

 

[gqjeff 10+ year member]

this is the one I have but I think mine does 20 amps not 15 amps.

http://www.battery-rechargeable-charger.com/vector-VEC1089A-car-battery-charger.html

 

[audiolife 5,000+ posts]

My sons 2 HC800 set idle for like 4 months.. Last night I tried hooking them up to the charger and 5 hrs later they only read 6.7 volts. Are they no good or do I need a special charger for them? I have never had a problem charging batts before but these things will not budge.

AGM batteries need a charger with an AGM mode. A regular charger can start off charging at over 15+ volts which can be pretty tough on small AGM batteries. Also being they are under warranty you should be fine anyway as they have awesome customer service.

 

[gqjeff 10+ year member]

Might get to check that customer service as I get a fault saying batteries are no good, need new batteries. The test at like 5.9 volts crazy they went that low in 3.5 months of non use????????????????

 

[audiolife 5,000+ posts]

My guess is your first charger you used was not AGM friendly

 

[UpGradde 10+ year member]

Might get to check that customer service as I get a fault saying batteries are no good, need new batteries. The test at like 5.9 volts crazy they went that low in 3.5 months of non use????????????????

yeah someting aint right. 3 months shouldnt do that....Maybe they were fukked from the beginning.//content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

 

[audiolife 5,000+ posts]

My sons 2 HC800 set idle for like 4 months.. Last night I tried hooking them up to the charger and 5 hrs later they only read 6.7 volts. Are they no good or do I need a special charger for them? I have never had a problem charging batts before but these things will not budge.

Might get to check that customer service as I get a fault saying batteries are no good, need new batteries. The test at like 5.9 volts crazy they went that low in 3.5 months of non use????????????????

Sounds to me like you over charged them with a charger not ment for AGM batteries. What was the voltage at before you charged them?