DURACELL 2 AMP BATTERY CHARGER/MAINTAINER

I've used this on small SLA, motorcycle, and even automotive batteries, and it has worked well so far in all cases. It is useful for maintaining car sized batteries in stock or storage, but not meant to charge a deeply discharged large battery. It gets toasty warm hooked to a car battery but I haven't killed the thing yet. It makes a hearty POP when connected, not sure if this is a capacitor charging, or if it drains much current when not plugged in. I'm happy with this maintainer- would buy again.

I got this to use with a couple of the GC-1270 12V 7.5AH cells from All Electronics, in my Tennis Tutor 2 tennis ball machine. The charger works great, delivering roughly 2A as advertised and keeping the charge voltage within spec (I don't have the benefit of a recording DVM, but from eyeballing the voltage from time to time it looked OK). A great value!

This is a "bargain" version of a much, much more exspensive charger/maintainer. For long term "float" charging of some kinds of wet cell lead-acid batteries, these can use some electrolyte checking. Bigger riding mower batteries and big cycle/snowmobile batteries seem to take it OK, but the tiny 4 amp/hour battery on my on-off road bike it uses quite a bit of water a month. My $100 unit doesn't do it(of course), but the exspesive unit keeps the big bike's battery happier(less sulfation) by cycling a load on-off. This unit will NOT keep a sealed motorcycle/watercraft/snowmobile battery charged. Yuasa calls for more voltage than these put out, not much, about .4 volts, but that's enough. $78 lesson learned. I think this unit would be fine for a stored car/truck/ tractor/RV/boat battery, but those smaller batteries have always been a little fussy. A decent value, but not perfect for all applications

I don't see why you can't keep it on the generator starter battery all the time.
Although, if you use the genny frequently, it should stay charged just like a car's battery does.

I have a 12v lead acid battery that I would like to run an led lamp I made off of. I am running off a generator year round and was wondering if I could leave this plugged into the wall and hooked up to my 12v battery. Would it keep the battery fully charged and be ok to just leave?


thanks