i got a used jell cell, and it is having issues charging. i had it on the charger for over 14 hours, and the voltage didnt change at all. it still reads around 9.25 volts. is there a way i can cycle it or is it garbage?
the charger is new. without a load it reads at 12.5 volt, charging the battery it is reading 11.20volt. what can i do?

If you're using the correct charger, it sounds like your gel cell battery might just be shot. You can use any popular A/C wall charger that's designed to charge a flight box battery. How old is the battery? My old one lasted 10+ years.

i donno how old it was. it was used for backup for the computer at hospitals. so i guess somthing like that would be replaced often.

for a replacement, i was looking at the hobbico torquemaster mini. how many battery charges can i get out of somthing like that? i will be charging rc plane batteries, 2/3a cell, 8 cell

The Torquemaster mini would be a good choice, but I would get the fullsize Torquemaster. It has a higher ampere rating. As for charges, it should last four or five years at least.

all i am going to do with the field battery is charging my electric rc planes with it. i wonder how many charges i can get out of my field battery before charging it agian.

I have an 18 amp hr battery that I got from a fire alarm company. I charge it maybe once a month. I use it to charge my electric planes as well as my field charger for my radio's. Good Luck, Dave

From an economics standpoint, it is hard to beat getting a lawn mower battery (about $28) and using that for your field charging. It has more capacity than most gell cells, has a higher amp-hour capacity and is not that much larger than a gell cell.

do you have any links to one?

i donno if this is a good idea or not, but anyway. i am going to be flying park flyers for now, and conversions in the future, so what my idea is that i will start off with one 7A gel cell good for 6 charges "basicly what i need for now for evening flights" and when the time comes, add a gel cell when needed. i would have it wired so multipul batteries will act as one battery.
the deep cycle battery would be good, but i dont want to get a 50 dollar charger for that, so what i thought is that for the same price i can get for just the charger, i can get 3 gel cell batteries, and use a hobbico charger for them.