Replacement BMS for a stock / kit Bafang M625

[HyperHydroForm]

Hello, wanting to replace BMS on a M625 Bafang kit with a 1000watt mid drive. I reconfigured the battery into a triangle shape! Installed battery works great but won't take a charge. I played around with it trying to get the charger to charge and I may have fried the stock BMS, so I'm thinking at this point to just get a new BMS and Controller, and charger since it's all proprietary canbus linked together, such a pain if I didn't get such a great deal I wouldn't have purchased.
I really don't know anything about this stuff so I need some help choosing a BMS. From what I can tell it's a 14s, cells are Samsung 50E 21700 5000 mah 9.8 amp, when I put a volt meter on each they all tested at 4.0, and there are 56 of them in groups of 8 and 7 "groups"... The batteries sticker lists 50.4v 19a, here are the manufacturer specs

• Capacity
• > 40Ah
• Voltage
• 48v
• Type
• lithium battery
• model
• BT F22.960. C
• Rated voltage
• 50.4DCV
• Nominal Capacity
• 19.6Ah
• Ratd Capacity
• 19Ah
• Max Continuous Discharge Current
• 35Continuous Charge Current

4A
The charger specs that came with the kit are
output 58.8 / 4 amp

All I know about the motor is it's a 1000 watt, not sure if it's a 48v or 52v?
Hoping for some help[ here, I really need a BMS, and find out what type of controller to buy being 52 or 48v. I'm going to get a 1000 watt BBSHD as a replacement, saw a video where they did it successfully on a M625 doing away with canbus. So I'm thinking new controller, charger and BMS so I can do away with canbus and get to riding! Can anyone please advise if you know of a solution, thank you

 

[BeachRider2024]

This canbus system is fairly new, haven’t heard much hacking/tinkering with it yet. Soon they all get hacked if there’s enough interests.

 

[E-HP]

Hello, wanting to replace BMS on a M625 Bafang kit with a 1000watt mid drive. I reconfigured the battery into a triangle shape! Installed battery works great but won't take a charge. I played around with it trying to get the charger to charge and I may have fried the stock BMS, so I'm thinking at this point to just get a new BMS and Controller, and charger since it's all proprietary canbus linked together, such a pain if I didn't get such a great deal I wouldn't have purchased.
I really don't know anything about this stuff so I need some help choosing a BMS. From what I can tell it's a 14s, cells are Samsung 50E 21700 5000 mah 9.8 amp, when I put a volt meter on each they all tested at 4.0, and there are 56 of them in groups of 8 and 7 "groups"... The batteries sticker lists 50.4v 19a, here are the manufacturer specs

• Capacity
• > 40Ah
• Voltage
• 48v
• Type
• lithium battery
• model
• BT F22.960. C
• Rated voltage
• 50.4DCV
• Nominal Capacity
• 19.6Ah
• Ratd Capacity
• 19Ah
• Max Continuous Discharge Current
• 35Continuous Charge Current

4A
The charger specs that came with the kit are
output 58.8 / 4 amp

All I know about the motor is it's a 1000 watt, not sure if it's a 48v or 52v?
Hoping for some help[ here, I really need a BMS, and find out what type of controller to buy being 52 or 48v. I'm going to get a 1000 watt BBSHD as a replacement, saw a video where they did it successfully on a M625 doing away with canbus. So I'm thinking new controller, charger and BMS so I can do away with canbus and get to riding! Can anyone please advise if you know of a solution, thank you

Your battery would normally be considered a 52v battery pack by most battery pack vendors or by folks around here. The stated specs are confusing and the 48v spec is just wrong. If comprised of tha Samsung 50E cells, then it is a 14S4P configuration. Most manufacturers us 3.7v as the nominal voltage for a cell, but some use 3.6v, which is how they got to 50.4vdc rather than 52v that most would consider the nominal voltage.
Can you take a pic of the existing BMS and post it?