battery charger Ah vs battery Ah - .: XT660.com

xtreme · # 1 22-02-10, 22:34

I have a battery yuasa 12v 8Ah/10HR. In the last 3 monts (winter) was keept in the house but never used it. I want to buy a battery charger and i don't know what to choose 12V but what about Ah? 5A 8A higher or less. Please help.
Thanks

orangejohn · # 2 22-02-10, 23:47

For a small motorcycle battery you want a low current charger and I think from memory you should charge at the 10 hour rate which is 0.8A for an 8Ah battery. Car chargers are unsuitable unless they have a low charge rate switch. I've got a CTEK charger that's supposed to pulse the current to de-sulphate the plates then charge at 0.8A until 14V is reached. It then reduces the output to maintain that Voltage. I think Bike magazine were giving one away if you took out a subsciption recently - godd value as they are about �36.
Hope this helps.

mac-cos · # 3 23-02-10, 11:05

I'd go for a CTEK and avoid optimates, every one of the latter I've had has had problems (over the years I've had 4 of the ******s and the last one is now intermittent).

gianni1951 · # 4 23-02-10, 11:38

Quote:

Originally Posted by orangejohn

For a small motorcycle battery you want a low current charger and I think from memory you should charge at the 10 hour rate which is 0.8A for an 8Ah battery. Car chargers are unsuitable unless they have a low charge rate switch. I've got a CTEK charger that's supposed to pulse the current to de-sulphate the plates then charge at 0.8A until 14V is reached. It then reduces the output to maintain that Voltage. I think Bike magazine were giving one away if you took out a subsciption recently - godd value as they are about �36.
Hope this helps.

I'm completely aggred with you. I use a BC Battery Controller as per link. (I use a smart type with 1500 ma)

I'm very satysfied. In winter, when may happen to don't use the bike for 1 month, I leave ever attached the controller (there is an useful connector that is ever attached to battery).

Ciao.

http://www.batterycontroller.it/

bonjo · # 5 23-02-10, 20:35

Accumate best investment I've ever made. Been using it on my bikes and to date not had to change one single battery. It can do both 12 & 6 V batteries. Came up best a couple of years ago in the "Ride" mag test.
It has enough oomph to even charge and maintain my car battery (although it take a long time).
There is also Optimate (also very good) which has more charging stages but strictly motorbike batteries as it has a lower current delivery and 12V only

xtreme · # 6 05-03-10, 20:43

thank you for your replies. The tehnical informations helped me not to buy a battery-car recharger because they don't have the right Ampere value.
I ordered a saito procharger compact 12V 0,6 A from Louis. I couldn't find one with 0.8A, only higher. I have to wait.
Thanks again

bjerrang · # 7 14-06-10, 12:51

Quote:

Originally Posted by xtreme

thank you for your replies. The tehnical informations helped me not to buy a battery-car recharger because they don't have the right Ampere value.
I ordered a saito procharger compact 12V 0,6 A from Louis. I couldn't find one with 0.8A, only higher. I have to wait.
Thanks again

The amps for the charger is not so important. A normal car/bike charger will stop at 14.4VDC and not overcharge the battery. If you have a constant current charger at 0.6A and forget to remove it afer its hours its much worse. Its recommended to use a smart charger like Ctek. By the small one who has a bike symbol on.

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