Li-ion New SANYO batteries 16v 3.9 amp for as little as $20
16V 3.8amp Li-ion SANYO battery pac with built in elactronics to prevent over charging. Picture on right shows the 12 cells inside of pac. Pac is sealed but can be forced open if individual cells are required. Pacs are available in 48v, 64, and 72v and total amps per your requirement.
here is a assembeled pac that is 8 batteries total 16v and 31amp. In series with a 48v system it makes a nice 60V.
This is in referance to FRODUS who likes to post information that he doesnt seem to know anything about. His post makes quite a few comments that are evidence that he lacks inteligence regarding the product that I posted. These are new, electronics balance cells, batteries are in parallel, no connection loss as verified in the lab, are NOT dangerous and have been used in scooter upgrades for over 2 years. I would suggest that FRODUS present evidence of his accusations or curtail posting lies and uendo's.
This is in referance to FRODUS who likes to post information that he doesnt seem to know anything about.
they're not SAFE for an EV.... maybe a bike or scooter because you can hop off when it bursts into flames.... they're lithium cobalt. ALL of the packs I've seen don't have good electronics inside. for balancing, maybe these do.... haven't seen the circuit board and there's no way to verify. Does each cell have a connection to the board? Do these boards monitor temperature to make sure the cells aren't heating up? You're selling LAPTOP packs... they're not meant to discharge more than 4A.
These are new, electronics balance cells, batteries are in parallel, no connection loss as verified in the lab,
EVERY connection from one battery to another has a LOSS. Now, its LOW loss, but when you add up 600 cells worth of loss between connections its not negligible anymore. Add up a bunch of small resistances.... then take I^2/r and you get how much power is dissipated in the connections. ALL CONNECTIONS HAVE LOSS!!!!!! What is the internal cell resistance of these cells? whats the part number? whats the date stamp on these?
are NOT dangerous
LiCo Is dangerous. Take one of those cells and SHORT IT... or overcharge it or over-discharge it. You'll see just how safe they are. I've seen these cells shorted and they will very quickly burst into flames. With a scooter they're fine for a while because the discharge is never that high. For those of us with motorcycles/cars/etc we need higher discharge rates and these won't handle it very well without being a risk to safety.
I would suggest that FRODUS present evidence of his accusations or curtail posting lies and uendo's.
I would suggest you stick to your own threads when trying to sell things, when people come into a thread when you're trying to sell something and bash a product I bet it gets annoying.... doesn't it. (by the way, uendo is spelled innuendo).
By the way, I'm an electrical engineer with a focus in Power Systems and alternative energy.... I know a thing or two about losses and safety. The only reason I posted here is because you pulled the same shit in another thread.
Cruisin,
this is the second time youve posted a product that cant do what you say (remember the dc-dc for 72v systems that cant take more than 75v?)
Lithium cobalt laptop battteries have poor service life in EV applications (unless you make the battery so large peak current is below 2C).
unlike you, Frodus does know what he's talking about.
Matt
no connection loss as verified in the lab
Absolutely no connection loss, it's AMAZING isn't it? The only catch is that you have to keep your eight year old laptop battery packs in a liquid nitrogen bath to keep the zero-loss interconnects superconducting properly. "The lab" is still working to determine how much the liquid nitrogen bath affects battery performance. But there's absolutely no connection loss, as guaranteed by "the lab"!!!
ROFLMAO
and they're dangerous.... the pack doesn't balance cells (only protects from overdischarge), has lots of connection loss and has a peak current of 62A for the pack above.
How long have these cells been sitting on the shelf? AST disapeared in 2001....
When is the last time they were charged? The cells do self discharge, and if they're dead, and have been dead a while, they're useless.
There are lots of better cells on the market.
____________
Travis Gintz
1986 Honda VFR Conversion
www.evfr.net