Re: Cheap Trickle Charger for Tractor?
I've used a few of the AC to DC adapters that are 12V DC output for various household appliances to keep a battery fully charged--ones with at least a 1 amp output..and be SURE it is DC output,many are not!..
They do not have a self tapering charge like most real battery chargers though,they can over charge,you must take them off every few days..
I've seen guys use an old computer power supply and RV ac to DC adapters to charge batteries too..
I have at least 5 battery chargers,one is a 1 amp 6-12V trickle charger for motorcycles and tractor batteries,,found it at the flea market for $2..
I think its a shumacher..probably 30+ years old...
Another one is a Sears one my dad bought around 1978,it is a 6 amp but has another mode you can use and dial in anywhere from .5 to 1-1/2 amps for small tractor and cycle batteries...still works good,and its seen many hours of use..
I bought two 10 amp old school Schumacher chargers for $3 each at the flea market,both identical,and they still work ok...there's always a lot of them there for sale and yard sales ,people practically give them away when cleaning out a garage or a deceased mechanically inclined person's collection..
My friend gave me two of his old chargers from his shop that were old and the big one was pretty beat up-it is a wheeled version with several amp settings and a 225 amp starter boost--unfortunately it wont put out any voltage,everything looks fine inside it ,I guess the diodes are shot,and though they still list part numbers,they are "NLA"...hate to scrap it for copper,but its of no use if it wont work..one site online I found said some alternator diodes worked to fix his,but I'm probably not going to bother fiddling with it..
The other one is a nearly new "smart" charger that looks brand new,inside & out,but its "dead"...probably something to do with the printed circuit board with IC chips and a lot of other electrical things like resistors and capacitors..
I'd never buy a new "smart" charger,they are pretty much junk IMO..useless for an electrolosis tank too..