Tenergy Batteries - any good?

[donorcycle]

These cells look like they are priced competitively. Has anyone had any experience with them?:

http://www.all-battery.com/lifepo4battery.aspx

How about these with the PCB built in?:

http://www.tenergybattery.com/index.php?page=shop.product_details&flypage=shop.flypage&product_id=458&category_id=19&manufacturer_id=0&option=com_virtuemart&Itemid=27

I was thinking of using some of their batteries with the built in PCB in place of a BMS. Would that work?

 

[auraslip]

no.
no.
and no.

Edit: Tenergy blows. Overrated c-rate and capacity. Also the pcb is limited to a very low current.

 

[icecube57]

No no NO nO and Hell NO! and everything the previous poster said.

 

[neptronix]

BTW you can assume that generally all lipo, other than the stuff designed for rc use, tends to suck real bad!
Usually they are 1-2C cells. Sag central!

These cells are being used more and more in non-motor applications mainly because they are light and small for the watt hours they provide.. so, not worth it imho.. unless you get the deal of a century.

 

[oatnet]

These cells are perfect if you only want use a fraction of their rated capacity and cycle life, but still want to retain the ballasting effect that keeps your eBike from floating away. They are expensive though, so you end up paying extra for those features.

-JD

 

[etard]

Tenergy must have excellent marketing or at least look like they are a good product, because if their sales actually reflected their product they would have gone under 10 years ago.

 

[bionx 1954]

I do not know about the lipo cells , but there chargers SUCK bought 3 last year ALL failed with in 3 months

 

[amberwolf]

The two smaller NiMH chargers I have from them (which came used from another ES member) for 7-12V packs are still working ok after unknown usage by original owner plus at least several hundred hours use by me, are still working fine. However, the higher-power unit had to be modified for active cooling, or it would probably be dead by now, as it gets pretty freakin' hot inside with it's passive cooling. Hot enough to damage the caps pretty quick if left the way it was, I think, possibly the semiconductors. The smaller one only works in bursts of maybe 50% duty cycle, of several seconds between states, so it never gets much more than warm, and doesn't even need ventilation.

Never tried their Li chargers.

But their batteries? I highly doubt they're worth the shipping cost, let alone product cost, as ebike packs. :lol: