Cheap Reliable Battery Load Testing

How do you test a deep cycle battery with a carbon pile tester? My 6V Lifelines have a 220 Ah rating at a 20 Hr rate. Apparently 3x or 660 Ah should be used and the Clore Solar 1876, 1000 A carbon pile tester ($216 on Amazon) only goes to 320 Ah and hence is limited to 107 Ah batteries.

The Lifelines also have a 1095 CCA rating so can that be used instead? And what do you use for deep cycle batteries that don’t have CCA ratings?

5x, I bought one 4 years ago. Helps eliminate most of the guess work. Great tool.

Well worth the few $ that they cost. Test anytime anywhere.

I bought one of these 15 years ago, still works perfect. it is just from the comercial manufacture instead of a chinese knock off.

Steve

Best 55 diagnostic bucks a person will ever spend. Will NEVER pass a battery with problems and will find batteries with beautiful specific gravity yet bad. I Jjust load tested my 9 year old AGM by loading it to 500 amps @ 9.9 volts. That's 1000 CCA

I have one, gets used every time I purchase batteries and several times a year, testing my batteries or someone else's battery

The cheese grater size tester is like stress testing while you're sitting in a recliner chair. WORSE THAN USELESS

The load amperage needs to be ADJUSTED to ½ CCA amperage then held for 15 seconds.

I would laugh at the handheld cheesegrater 100 amp fixed load. But error by 350 amps too few for a group 65 makes me wince instead of chuckle. Parts store testing is a farce.

I bought one of those at least 5 years ago, maybe longer.

Hey thats cool!! I wanted to do a load test on my GC2 batteries when brand new and then throughout their life. Plan was to do something like a 20a load and monitor voltage drop on a fully charged battery. That works well (not at fully charged) for lithium batteries found in RC toys. Not sure if its a good test for a flooded lead battery though.

I don’t want to take my TT to Walmart.