I have started trying out a new tester, the ET5410 (about $185 including air freight). At 35 amps it takes about 8 hours to test a cell, but I'm going to test lower amps due to my fuse holder heating up.
It's much better than the $30 tester from ATorch. This $30 tester has a tendency to burn out quickly, so be aware of that. While it is working, this cheap tester seems to be very accurate. I just worry about it shorting, hence the fuse.
To make testing and charging easier, I've been using home made Anderson powerpole (45 amp) connectors, with a 40 amp inline automotive fuse. Until after I made my own, I didn't know of a source to buy them pre-made, here it is. The ones I made only have a fuse on the positive side. I can tell you that testing at 20 amps, no problem. Testing at 35 amps (since it has a 40 amp fuse), the fuse holder is the weak link. The wire and all crimps are not getting warm, but that fuse holder certainly is. I think I'll dial it down to 30 amps next test. Add some 10 gauge copper wire and some good ring terminals to a power supply and tester, and easily swap between them. Makes charging, capacity testing, etc really easy. If you could change the voltage high and low disconnect, THIS would be very interesting (7 anderson connectors with a web server to turn them on/off and get voltage/amps and automatic high/low voltage/amps disconnect)
I'm also going to be testing the new and improved ATorch tester, the DL24P. This one certainly looks better, much better heatsink, much higher quality in general (even decent but too short "free accessory"). I haven't had a chance to run this one yet, but certainly the improved voltage sense circuitry shows someone was listening. It's also over $50! It does include bluetooth.
I can highly recommend the Riden power supply (and battery charging feature). I have tested this and when set to 3.65 volts, it will charge up to that voltage, and automatically turn off charging when less than .1 (1/10 of an amp) is being drawn. Very reliable, rock solid and pleasant interface. Nice piece of equipment, a genuine lab grade power supply for about $160. Don't bother with the WiFi unless you are into automation like me.
Anyone else care to share how they are testing?
It's much better than the $30 tester from ATorch. This $30 tester has a tendency to burn out quickly, so be aware of that. While it is working, this cheap tester seems to be very accurate. I just worry about it shorting, hence the fuse.
To make testing and charging easier, I've been using home made Anderson powerpole (45 amp) connectors, with a 40 amp inline automotive fuse. Until after I made my own, I didn't know of a source to buy them pre-made, here it is. The ones I made only have a fuse on the positive side. I can tell you that testing at 20 amps, no problem. Testing at 35 amps (since it has a 40 amp fuse), the fuse holder is the weak link. The wire and all crimps are not getting warm, but that fuse holder certainly is. I think I'll dial it down to 30 amps next test. Add some 10 gauge copper wire and some good ring terminals to a power supply and tester, and easily swap between them. Makes charging, capacity testing, etc really easy. If you could change the voltage high and low disconnect, THIS would be very interesting (7 anderson connectors with a web server to turn them on/off and get voltage/amps and automatic high/low voltage/amps disconnect)
I'm also going to be testing the new and improved ATorch tester, the DL24P. This one certainly looks better, much better heatsink, much higher quality in general (even decent but too short "free accessory"). I haven't had a chance to run this one yet, but certainly the improved voltage sense circuitry shows someone was listening. It's also over $50! It does include bluetooth.
I can highly recommend the Riden power supply (and battery charging feature). I have tested this and when set to 3.65 volts, it will charge up to that voltage, and automatically turn off charging when less than .1 (1/10 of an amp) is being drawn. Very reliable, rock solid and pleasant interface. Nice piece of equipment, a genuine lab grade power supply for about $160. Don't bother with the WiFi unless you are into automation like me.
Anyone else care to share how they are testing?