Stock battery will not hold charge.

TBR7D · 01-02-2023, 08:34 PM

So decided to build a LIFEPO4 pack to replace it.

Bought 8 of these, a Battery Management System(BMS) off of ebay, little wiring and i have a 16AH battery pack.

It would not fit in stock location so i relocated it to the truck i just installed.

Everything came in under $60.

This thing sure spins the heck out of the starter.

buzz · 01-03-2023, 03:31 PM

Thats a bad ,mine 2 years old going strong. i try to ride as much as i can.

Megadan · 02-04-2023, 12:22 PM

Quote:

Originally Posted by TBR7D

So decided to build a LIFEPO4 pack to replace it.

Bought 8 of these, a Battery Management System(BMS) off of ebay, little wiring and i have a 16AH battery pack.

It would not fit in stock location so i relocated it to the truck i just installed.

Everything came in under $60.

This thing sure spins the heck out of the starter.

I was curious as to the specifications on the BMS you used? I have been considering using cells like these, or similar, to build a flat battery pack to hide under the seat in a custom box.

TBR7D · 02-17-2023, 09:58 PM

Sorry for the late responce Dan. Weather here has been cold and wet for over a month so the bike has been just sitting in the shop.

Ebay Link

This is the BMS i used. It is over sized for what we would need but was cheap and I can use it for other applications if needed.
Really the batteries are sever overkill of what we need also but they were cheap too so what the heck!

But, I don't think these batteries will fit under the seat. Too big. check the size. Custom box may work.

BTW, i started the bike for the first time in about 4 weeks the other morning. It was about 45. Damn battery works! Nice after fighting with the stock battery and the loose connection on the Regulator.

01-02-2023, 08:34 PM	#1
TBR7D Join Date: May 2022 Location: South Louisiana Posts: 26	Stock battery will not hold charge. So decided to build a LIFEPO4 pack to replace it. Bought 8 of these, a Battery Management System(BMS) off of ebay, little wiring and i have a 16AH battery pack. It would not fit in stock location so i relocated it to the truck i just installed. Everything came in under $60. This thing sure spins the heck out of the starter. __________________ TBR7D 1982 Honda CB900C - Future project
	2

02-17-2023, 09:58 PM	#4
TBR7D Join Date: May 2022 Location: South Louisiana Posts: 26	Sorry for the late responce Dan. Weather here has been cold and wet for over a month so the bike has been just sitting in the shop. Ebay Link This is the BMS i used. It is over sized for what we would need but was cheap and I can use it for other applications if needed. Really the batteries are sever overkill of what we need also but they were cheap too so what the heck! But, I don't think these batteries will fit under the seat. Too big. check the size. Custom box may work. BTW, i started the bike for the first time in about 4 weeks the other morning. It was about 45. Damn battery works! Nice after fighting with the stock battery and the loose connection on the Regulator. __________________ TBR7D 1982 Honda CB900C - Future project Last edited by TBR7D; 02-17-2023 at 10:14 PM. Reason: edited to add....
	0

01-03-2023, 03:31 PM	#2
buzz Join Date: Dec 2020 Location: Dayton Pa. Posts: 870	Thats a bad ,mine 2 years old going strong. i try to ride as much as i can.
	0