There is relatively cheap battery http://www.ebay.co.uk/itm/24V-

[Einars]

There is relatively cheap battery http://www.ebay.co.uk/itm/24V-20AH-LiFePO4-Battery-Charger-Rechargeable-Electric-Bicycle-Ebike-SAL-air-/170815780994?pt=US_Rechargeable_Batteries&hash=item27c569f882
What are you thinking about this? Ping battery costs 468USD with shipping. 79USD cheaper.

 

[dogman dan]

Well, a 24v pack would cost half as much eh? Or is it 24v 20 ah that costs 468 from ping?

Ping has now got 5 years of unbroken reputation for sending out packs that rarely have a defect, and doing the best that can be done to give CS from another continent. He'll send you a new charger, bms, or cells without a big fuss if a defect happens. It's fairly obvious that he must be testing cells before assembly.

Many many many other Ebayers have replied to a problem with, send the battery back here for a replacement. Then some of those guys were even known to resell the known to be defective battery again! Lots and and lots of 20 ah round cell packs typicaly only put out 15 ah.

I can't say about this particular ebay vendor. He could be as good as Ping, or as bad as Jimmy Wu was.

 

[dogman dan]

Just went and looked at that actual ebay link. Wow, an honest to god actual duct tape wrapped pack in 2012.

There's a real indicator of an estabilished quality vendor. Kinda makes you Wu zee.

 

[Einars]

Guys
Which companies are you suggest for me? I am from EU (Latvia). I am looking for LiFePo4 20Ah battery for 500W 27.4A DC motor. Now I know only one Ping Battery.
Thanks 8)

 

[Ypedal]

one of many options
http://www.cyclone-tw.com/order-parts.htm

made with PSI cells, very good stuff... :wink:

 

[Einars]

Maybe some company is form Europa. It would be lower shipping costs and no VAT and customs duty.
I found: http://www.ev-power.eu/LiFeYPO4-batteries-12V-1-1/Lithium-Battery-LiFePO4-12V-20Ah.html?cur=1
2x12v = 24v

 

[Ypedal]

Maybe some company is form Europa. It would be lower shipping costs and no VAT and customs duty.
I found: http://www.ev-power.eu/LiFeYPO4-batteries-12V-1-1/Lithium-Battery-LiFePO4-12V-20Ah.html?cur=1
2x12v = 24v

http://www.ev-power.eu/docs/GWL-LFP-Product-LP12V20AHB.pdf

low C rate.. junk imo..

 

[Einars]

3 C, continuous for max 15 minutes from full charge
I think for 500W motor good enough. Or 0.5C is right?