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Posts: 23
| Hi Guy's-
I have a question about what I was told by a technician at Interstate battery...
Here goes: I have 4 batteries (2) 27-group trolling motor batts, (2) 29 group 1 for big motor/accessories 1 for kicker/power steering pump. All batt's purchased 6/09
after every time out since new I charged the batteries no matter how long I used them. I have 2 on board Minn-Kota MK-220 chargers 10A per Bank charging rate. I average 10-15 times out on the water per season.
After last season, when I went to charge the Batts for the final time I noticed both 27's & (1) 29 had spit acid. I took them out cleaned them up & charged them up all showing fully charged on my charger & meter. I put a trickle charge on them all in the middle of Feb & all were showing fully charged after 15 min on the trickle charger on each battery.
When I looked at the batts on Thursday 2 more batts spit acid again. I took all 4 in to get load tested & (2) were completely discharged & the other (2) failed the load test. Interstate told me the plates were burned up on the batts causing them to spit & the reason for this is I'm charging at too fast a rate on the 10 amp charger.
They said NEVER charge any battery at over 2 amps. Especially the AMG glass matt as this will just solidify the gel inside & burn the battery up in an instant.
They say if I use a 2 amp charger & nothing more, the batteries will last 10+ years.
This sounds good but just about every on board charger is 10amps or more as time is the essence when it comes to charging the way the chargers are advertised. So this is not computing with me?
Interstate told me save my $$ on expensive AMG type batts & get the regular lead/acid type. They are telling me to just charge at a slower rate & my life expectancy will double?? I'm CONFUSED...Any thoughts by the battery experts out there???
Thank You
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