Battery - Seat post mounted - side entry

[shemozzle999]

Variation on the frog type battery:

e bike battery,,View electric bike battery, Product Details from Changzhou Hua Yu Xin Feng Motor Co., Ltd. on Alibaba.com

also shows it mounted on a Dahon complete with MXUS plugable controller.

 

[Gens Ace battery]

that battery is not fresh now.
There are 4 different size case with it, it can be made with 24V and 36V.
ELFEi Umbausatz Hinterrad 250W | Elfei
A German supplier is selling this kind of battery, you can have a look if you are interested.

I think the future E-bike battery will be going to be inset, just like the Stromer E-bike.
inset the battery to the bike frame.

Regards,
Benson