Matt Gruber
1 MW
Tenergy 2a 37-42 volt bulk charger review
http://www.all-battery.com/tenergysmartchargerfor37v2ali-ion_lipobatterypack-01338.aspx?variation=4779
low cost $17-25
constant current to 41 v, then tapers
my test on a 2p10s makita/sony cells
37.5 before charge
38.5-41.0 14 minutes about 1.83a
41.3 1.51a 20 min into charge
41.4 1.35a 24m
41.5 1.20a 28m
41.6 1.04a 33m
41.7 .75a 45m
41.8 .46a 53m
41.9 .33a 60m
42.0 .21a 72m
42.3 .08 down to .02a 140m
42.4 .02 down to .01a 173m
my meter is a little high, other meter reads 42.2 so don't dis it on higher v
looks like a decent charge after 1 hour
http://www.all-battery.com/tenergysmartchargerfor37v2ali-ion_lipobatterypack-01338.aspx?variation=4779
low cost $17-25
constant current to 41 v, then tapers
my test on a 2p10s makita/sony cells
37.5 before charge
38.5-41.0 14 minutes about 1.83a
41.3 1.51a 20 min into charge
41.4 1.35a 24m
41.5 1.20a 28m
41.6 1.04a 33m
41.7 .75a 45m
41.8 .46a 53m
41.9 .33a 60m
42.0 .21a 72m
42.3 .08 down to .02a 140m
42.4 .02 down to .01a 173m
my meter is a little high, other meter reads 42.2 so don't dis it on higher v
looks like a decent charge after 1 hour