Hello everyone!

I bought a Veloteq ebike about a year ago and things have been pretty good so far, but I want to get a better battery that will last me a bit longer and also give me a bit more range. That's when I discovered the wonderful world of Lifepo4! Apparently these types of batteries are very good in terms of holding their original charge capacity and don't die as easily as SLA batteries (no to mention that they hold up better in colder weather!)

Anyways I've been doing some research on which company to go with and what to do, so I thought I'd run it by the good people here at BikeForums!

I spoke to another friend who already owns an ebike and he says that Ping Battery is one of the more reputable dealer/manufacturer for OEM lifepo4 batteries that come in the 48v / 20ah flavours. He also mentioned that ping has a great rep for service and warranty repairs. So I'm about drop about $700CAD to get one of these batteries and a 2a charger from him and try to get things setup. Here is how I plan on going about doing things:

Here is the battery I plan on buying: ping battery


1.) I've started off by measuring my battery compartment and it looks like a standard 48v / 20ah ping battery will need some modifications, but I've fowarded him my measured specs. I'll share them here for any other Veloteq owners who want to upgrade from SLA to lifepo4 in the future:
*Note: The battery setup for some bikes might be different, so be sure to check your battery specs, I've got 4 x 12v 20ah batteries in my battery case.

Original Battery Dimensions
Width: 17.5c m + 7 cm (the +7cm is for the 4th battery, which takes up 7cm x 17.5cm)
Length: 22.5 cm
Height: 16.5 cm

Ping Battery Dimensions:
Width: 19.6 cm
Length: 21.3 cm
Height: 15 cm

I'll include a diagram to show how my current setup is like.


2.) Once I get my new ping battery, I'll have to make some adjustments to my current battery case as the current wiring is setup for the battery to be charged from the same port it discharges/draws power from. I believe the BMS controller is in the battery charger I have (I could be wrong). So I'll need to:
a.) Wiring up the discharge (+) and (-) wires up to the current female plug I have in the battery compartment then,
b.) Setup a new port for the charging of the battery. (There should be two other wires for charging that go to the BMS) Is this correct?


I'll add some addition info and pics once I get my battery setup and how I plan on making it all work so that my battery setup doesn't change too much. Thanks for any help provided and I'd be more than glad to share my info / help with anyone who needs it!


Cheers
M