4 of 4 people found the following review helpful.

Great charger for 12V SLA's

This is a pretty good 12V lead acid battery charger/maintainer.
I bought it specifically for maintaining SLA (sealed lead acid) batteries used in UPS battery backups.
I usually buy a bunch of them every few years to replace old/exploded ones for a dozen or so APC UPS's.
The problem is they will sit around for up to a year before i need to actually do the replacements and that can kill some of them.
So i finally bit the bullet and bought the NOCO G3500 to top them up and keep them alive until they're needed.

Out of the box to using it was 5 minutes. It comes with a long battery and AC power cord plus the 2 DC cords that connect to the batteries.
I used the oversized alligator clips, for the small 12V SLA's i have, they're huge but they worked fine!
Realistically i can cut up the ring terminal cable and put on the proper fast-on connectors to fit my SLA's but the alligators worked fine.
You just need to make sure you are properly connecting to the terminals. You may also need to clean the battery terminals, some can develop an oxide coating.

I was able to top up the 5 SLA's i have in a few hours without any issues.

Though the price is at the high end, this is a superb charger and i would recommend it.

Yes, I recommend this product.

Verified purchase