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10S4P, straightforward, but has a nasty flex sense harness that must be handled with extreme care. We can do capacity checks only with the Bosch diagnostic tool, and we can do recell as long as the BMS is good. The adapter dongle for the charger (black) and ...

They have the same BMS. BMS swapping is possible and easy - more difficult if from 500 to 625 or vice versa. There are four T15 screws on each end. On the bottom end, two of them are covered by as plastic plate, that needs to be removed. It is held on by thre...

10S5P design, 13 Ah -> 458 Wh 11 T15 screws hold it together. No flaps. Strong plastics! It has two charge ports - the second is a 4-pin XLR. Uses the same 5V enable. Recovery from deep discharge The BMS needs to be de-energised: remove B+ and the se...

Performance Classic The middle pin is the 5V.

The batteries are 36V, 10s5p layout, 11 to 17 Ah capacity. They go under the names Kalkhoff, BMZ, or Derby Cycle. It does communication with the bicycle, but not with the charger. However, it can be discharged without special equipment, simply by connecting to...

Solder the middle ones first, so it will not move out of alignment. Do not solder two pins of the same tab right after one another, you might melt the helper piece. Hold the regulator down with something while soldering it in. This is the hardest part....

We need to build a simplified version of this: https://www.seeedstudio.com/CANBed-FD-Arduino-CAN-FD-Development-Kit-p-4724.html We need Voltage regulator that supports up to 42V 120 Ohm termination Battery enabler hack The goal is to hack the battery...

This battery was out of balance - one cell is 3.23 while the rest is all 3.33V. CALB-TUV-EN62133.pdf  

If I touch together the orange and brown signal wires, the charging works.

pin 1: positive+, pin 2: empty, pin 3: negative-

Sticker No serial number anywhere on the battery (other than on the BMS itself) Lotsa Polish text EAN: 5903317865711 - same on all of them Supposedly 14.4 Ah - that would mean 3600 mAh cells! Supposedly Samsung cells Display 4 green LEDs Simple...

The housing is made of two parts: Shiny plastic top layer, onto which the rubber mat is glued White plastic tub The battery is secured into the board by three metal twisting thingies, and they seem to go through both the plastic top part and the...

10S1P arrangement, Samsung 25R cells. (High power, low capacity!) The BMS does not actually have a switch, it just enables / disables the charger / device via communication. The BMS has a 40A car fuse soldered into the board. 3 pins: P+ COM P- ...

Battery 36V 15Ah - MH1/17.5Ah MJ1 BH 48V   9Ah MH1/ 10.5Ah MJ1 BH 36V 12Ah MH1/14Ah MJ1 Whale 36V (Down Tube Type) 15Ah MH1/17.5Ah MJ1 Black whale 52V 12Ah MH1/14Ah MJ1 ElectricxW 15Ah MH1/17.5Ah MJ1 Evo battery 36V 15Ah MH1/17.5Ah M...

  24V, 20Ah 8S1P LFP with pouch cells UART communication most likely In this battery, B2 was puffed and low voltage, the rest of the cells fine. The bucket is held together by 4 long M5 bolts, with H5 heads. The bucket is made of 3 parts There are 2 c...

We see three types of Wisper batteries, all 36V: Short brick Long brick Pillion (rare) We can do recells on all of them. The bricks have a common port BMS, and the lock switches the power line, therefore we can use the Daly BMSs! The short brick can f...

Feedback from actually building it The isolation plates need to be thicker and longer so that it protects the nickels hanging out.