Maxamps and Neuenergy lipo testing

[lincpimp]

Originally Posted by Cowboy

I have done this on my lipo's and they all have come up short. Maxamps 4s6000mah 20c tests at 70 amps @ 12 volts which makes it 11.66c . Trinity Lipro 2s 4500mah 20c tests at 40amps @ 6 volts which makes it 8.88c. The trinity packs I tried to get the rated 20c (90 amps), 70 amps was max I could get and the voltage went down to 2 I only held it there for a few seconds. Basically you could dead short the Trinity packs and 70 amps would be all you would get. I don't have alot of faith in the manufactures numbers.

Great info! Any specs, or info about your test gear? How was it setup? Any chance of a pic?

Trinity LiPro's are the worst I have run. fresh pack in a Traxxas VXL will trigger the LVC 50% power mode when punching the throttle to full. Even the MA batteries did not do this. We tested 3 Trinity LiPro's on 2 different VXL's to make sure it was not a isolated issue.

[lincpimp]

Originally Posted by Dewmerz

Trinity LiPro's are the worst I have run. fresh pack in a Traxxas VXL will trigger the LVC 50% power mode when punching the throttle to full. Even the MA batteries did not do this. We tested 3 Trinity LiPro's on 2 different VXL's to make sure it was not a isolated issue.

I had the same issue with a maxamps 4000 pack. When it was fully charged it was fine, but it did it after a few mins.

This is what I'm using. It's very simple. It is just a ammeter and a voltmeter with adjustable load. You just hook your battery up to it and turn the knob. As amps go up volts go down, just watch the gauges. You can adjust it for any load you want. If you want to do a long test like 40 amps for 10 minutes I would put a fan on it

[lincpimp]

Originally Posted by Cowboy

This is what I'm using. It's very simple. It is just a ammeter and a voltmeter with adjustable load. You just hook your battery up to it and turn the knob. As amps go up volts go down, just watch the gauges. You can adjust it for any load you want. If you want to do a long test like 40 amps for 10 minutes I would put a fan on it

Nifty. That looks like a good piece of equipment.

[VintageMA]

Some more MaxAmps 5Ah 3S pack puffing.....

I've got 2 3S MaxAmps 5Ah packs that I've been using for not even a year. They've got maybe 30 - 40 cycles each. Since I've put in the RCM extended chassis on my CRT.5 and went up to 30 series tires my Amp draw has gone way up and runtime gone way down. I know peaks are hitting the high 90s, but the packs are lasting no more that 10 minutes. That's an average of (60/10)*5=30Amps.

30 Amps continuous (really a 6C rating) and at the end of one run a pack was reading 130* and was puffed out on both side. The puffing went down as the pack cooled - but I sat there and watched th pack for about 30 minutes - I was afraid to put the pack in the car for the ride home.

Very disappointing - I have already ordered a 3S 3900 (25C) Neu pack - so we'll see how much better it does when it comes in.