dogman dan
1 PW
Edit. Review thread over here. http://endless-sphere.com/forums/viewtopic.php?f=4&t=71499
I've sworn for years that no way I'd ever send a pile of money to China, on Alibaba.
But yesterday, I just couldn't resist on this one.
http://www.aliexpress.com/store/product/48V-20AH-Samsung-Lithium-Electric-bike-Battery-BMS-Charger-54-6V-High-Power-Electric-Bicycle-have the certificate. That is one reason I stopped buying shipped from china batteries a few years ago.
1500W/1714144_32371948308.html
Obviously not going to be the very best Samsung cells. But the price is just too good for that size, and the shipping appears to even be legal! They seem to
All the specs seem legit, it's not crazy too low weight for that Ah, or any red flags like that. Cut the claimed discharge rate in half of course, so it should have no problems running a 22 amps E bike kit. Paralleled with my 13 ah allcell, it should run ok on my big motor cargo bike if I set the controller for 30 amps. I'll finally have about 1500 real actual wh of range, without carrying any hobby king shit.
If this works out, it will be even cheaper than my first pingbattery, back when they were extra cheap with the 1c pouches. 1000wh for four hundred bucks. That ping was $400, but only 750 wh.
Supposed to come in less than two weeks, We'll see....
EDIT
It came in less than a week. Nice! But it was not shipped legally.
Box in good shape, well packed.
$398 including the shipping, no message later saying send more money for shipping.
Charger the piece of shit I expected, but I was able to fix it and it does work. It's fan was flopping around loose in there.
First try riding, and 900w load did not make it sag like crazy. Only 2v sag under load. I call that ok. So at least average decent cells inside. Not .5c laptop cells. Maybe laptop cells, but good enough ones. Performs better than my allcell, and at least as good as my pingbattery.
Third cycle, a deeper discharge of 16 ah. End voltage 45.5v, so I don't think I'll really get 20 ah from it. 18 ah will satisfy me. This cycle was done at about 600-800w. Max 1000w. 20mph is the max speed of the longtail cruiser, since it uses the EBK heavy duty kits low rpm motor. I'd hoped to get the full 20 ah at such an easy discharge rate, but figured I might not on a pack this cheap.
Voltage sag still only 2v, even climbing back up the big hill with lower voltage. At no time did the pack get any warmer than body temp. Not like my allcell pack, that gets much hotter by 45v. Clearly, 20 ah size has a lot to do with that, the allcell is only 13 ah.
I've sworn for years that no way I'd ever send a pile of money to China, on Alibaba.
But yesterday, I just couldn't resist on this one.
http://www.aliexpress.com/store/product/48V-20AH-Samsung-Lithium-Electric-bike-Battery-BMS-Charger-54-6V-High-Power-Electric-Bicycle-have the certificate. That is one reason I stopped buying shipped from china batteries a few years ago.
1500W/1714144_32371948308.html
Obviously not going to be the very best Samsung cells. But the price is just too good for that size, and the shipping appears to even be legal! They seem to
All the specs seem legit, it's not crazy too low weight for that Ah, or any red flags like that. Cut the claimed discharge rate in half of course, so it should have no problems running a 22 amps E bike kit. Paralleled with my 13 ah allcell, it should run ok on my big motor cargo bike if I set the controller for 30 amps. I'll finally have about 1500 real actual wh of range, without carrying any hobby king shit.
If this works out, it will be even cheaper than my first pingbattery, back when they were extra cheap with the 1c pouches. 1000wh for four hundred bucks. That ping was $400, but only 750 wh.
Supposed to come in less than two weeks, We'll see....
EDIT
It came in less than a week. Nice! But it was not shipped legally.
Box in good shape, well packed.
$398 including the shipping, no message later saying send more money for shipping.
Charger the piece of shit I expected, but I was able to fix it and it does work. It's fan was flopping around loose in there.
First try riding, and 900w load did not make it sag like crazy. Only 2v sag under load. I call that ok. So at least average decent cells inside. Not .5c laptop cells. Maybe laptop cells, but good enough ones. Performs better than my allcell, and at least as good as my pingbattery.
Third cycle, a deeper discharge of 16 ah. End voltage 45.5v, so I don't think I'll really get 20 ah from it. 18 ah will satisfy me. This cycle was done at about 600-800w. Max 1000w. 20mph is the max speed of the longtail cruiser, since it uses the EBK heavy duty kits low rpm motor. I'd hoped to get the full 20 ah at such an easy discharge rate, but figured I might not on a pack this cheap.
Voltage sag still only 2v, even climbing back up the big hill with lower voltage. At no time did the pack get any warmer than body temp. Not like my allcell pack, that gets much hotter by 45v. Clearly, 20 ah size has a lot to do with that, the allcell is only 13 ah.