Looking for simple battery charger

rixtag

LawnSite Senior Member
Location
Lehi Ut
A slow charge used regularly will prolong the life of the battery. +1 for the battery tender. It comes with a pigtail that you leave attached to the terminals and then you just plug it in when you aren't using it. It's awesome for seasonal use batteries.
 
Define "battery"? What kind?
If you're talking about a smaller lawn tractor type (UR1) class, around 30 amp hours capacity, you'd only need a 4 amp charger to bring it from dead to full in eight hours.

If it's a car or truck battery, the math still applies. A 100 amp hour battery needs 12 amps for 8 hours for a full charge.

The real question is why is the battery dead?

A conventional lead acid battery self discharges at a little less than 1% of it's remaining charge per day. Even after 6 months, it won't have enough juice to crank and crank and crank, but it will crank fast enough for 20 or 30 seconds to get something started.

A conventional lead acid battery is pretty much junk after being flattened 5 or 6 times. They are meant to provide high output for starting, not to provide power over time. Deep cycle batteries are designed for that application, that's why they're used in solar power applications.

If you're discharging a battery ( hopefully a deep cycle ), on a daily basis, ( hence the need to re-charge in 8 hours ), $45.00 for the one from Amazon isn't bad for a charger that has a brain, and will charge the battery both quickly and as gently as possible.
 
OP
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ed2hess

LawnSite Fanatic
Define "battery"? What kind?
If you're talking about a smaller lawn tractor type (UR1) class, around 30 amp hours capacity, you'd only need a 4 amp charger to bring it from dead to full in eight hours.

If it's a car or truck battery, the math still applies. A 100 amp hour battery needs 12 amps for 8 hours for a full charge.

The real question is why is the battery dead?

A conventional lead acid battery self discharges at a little less than 1% of it's remaining charge per day. Even after 6 months, it won't have enough juice to crank and crank and crank, but it will crank fast enough for 20 or 30 seconds to get something started.

A conventional lead acid battery is pretty much junk after being flattened 5 or 6 times. They are meant to provide high output for starting, not to provide power over time. Deep cycle batteries are designed for that application, that's why they're used in solar power applications.

If you're discharging a battery ( hopefully a deep cycle ), on a daily basis, ( hence the need to re-charge in 8 hours ), $45.00 for the one from Amazon isn't bad for a charger that has a brain, and will charge the battery both quickly and as gently as possible.
Is it helpful to put slow charge on equipment like chipper that may sit more than used?
 

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