Close
The car is 1985. spiral cell agm battery needs charging. need special process?
1990 Toyota Celica

The car is 1985. Spiral Cell AGM Battery needs charging. Need Special process?

(1990 Toyota Celica)
My son installed a Spiral Cell AGM Battery hoping it would hold the charge longer because he does not drive often. It "died" anyway. Repair shop says he can not charge it because it's a "Gel" battery and needs special charging equipment. My son says it's not a gel battery, but is a "spiral cell AGM" battery. Does that require a special charger or special process? If so, where do I bring it? Thanks!
1 answer & 1 comment
Popular Answer
of Greg Solow's Engine Room on September 26, 2011
This info is correct found on Mazda Miata web site:
One of the differences with the AGM battery compared to the wet-cell battery is the recharge rate. That is, how fast you can put energy back into the battery. With a wet-cell battery you can "quick charge" it at about 20 amps or more. Usually this is when you would boil the electrolyte right out of the battery. The AGM batteries require a lower charge rate, for a longer time period. If your battery will not crank the engine, you should charge the battery at a rate of 1 amp or less for 18-24 hours. If you try and charge it like a wet-cell battery, you will destroy the battery.
Sign in to reply
on September 27, 2011
Thank you so much. Does this require a special charger, or can this be done with a "regular" charger, but just set at the lower rate? If it requires a special charger, do you happen to know where I could take the battery to have this done in this area?
General Diagnosis
$88 - $111 Learn More
of Greg Solow's Engine Room on September 26, 2011
This info is correct found on Mazda Miata web site:
One of the differences with the AGM battery compared to the wet-cell battery is the recharge rate. That is, how fast you can put energy back into the battery. With a wet-cell battery you can "quick charge" it at about 20 amps or more. Usually this is when you would boil the electrolyte right out of the battery. The AGM batteries require a lower charge rate, for a longer time period. If your battery will not crank the engine, you should charge the battery at a rate of 1 amp or less for 18-24 hours. If you try and charge it like a wet-cell battery, you will destroy the battery.
Sign in to reply
on September 27, 2011
Thank you so much. Does this require a special charger, or can this be done with a "regular" charger, but just set at the lower rate? If it requires a special charger, do you happen to know where I could take the battery to have this done in this area?

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
My 93 celica gt doesnt want to idle or maintain power when going at steady speeds also when you hit the gas some...
Did scan on engine, computer tells me bank 1 burning lean... changed gas usage a year ago still say burning...