A123 20AH Prismatics Revisited

The most promising battery currently available that I'm aware of for ebikes is the A123 20AH prismatic cell. It's very compact, holds a big charge, can be used at 30C which translates to 600A continuous, is nearly indestructibe, and is very inexpensive right now. I was eager to buy 12 or 14 for a 36V pack (with spares) for my Tidalforce bikes but then heard about a preassembled pack of 7S3P available for a similar price to the 14 separate cells... The 7S3P pack looks like this:

It looks as if it's all set up to go into an automobile or other vehicle since it has a strong plastic case surrounding the battery cells. Inside, it looks like this:

It looks as if the balance wires come right out to the outside and the 3P packs are very securely held in place with bolted down plates. I'm eager to find out more on these cells and it looks like lots of other endless-sphere.com folks are as well.

More later,
Ambrose

Great review of bike tail lights

I happened upon this great review of the most popular tail lights on the market. The models range from a $3 Amazon special to the top of the wattage scale Cygolite Hotshot. If you're in the market for a tail light. This will tell you all you need to know!

http://bicycles.blogoverflow.com/2012/03/tail-light-review/

As for my tail light, I have a Magicshine MJ-818 without the battery pack. I have purchased a 18650 battery holder for it, but it hasn't arrived yet. The Magicshine MJ-818 is a 3W tail light with a variable strobe pattern. It's intensely bright but does suck up a lot of power. I have a set of 4 Trustfire 2500mAh 18650 cells which should provide lots (5000mAh) of power to the light. IF and WHEN it arrives!

Doctorbass tests the A123 20AH cells

These are very promising cells. The price is extraordinary as well. They should be available for around $320 shipped in quantities of 12!

Here's the setup.
http://www.youtube.com/watch?v=ZtQvmURq3nQ

Here's the testing results.


http://www.youtube.com/watch?v=UPTRoLKlHpg

More later,
Ambrose