4s2p module with 8 Sanyo 2400mah 18650 cells - Heartmate
These are excellent medical modules and the cells in these modules often test amazing. These medical batteries don't get cycled too many times and often get replaced after just a few uses because these are for heart medical devices. These modules are made up of 8x 2400mah 18650 cells in 4s2p configuration. You can crack the case around at the seam to open them. Do not crack the case on the side of the connector tabs because those tabs run through the plastic. You can see in the photo how we have the pack opened, its a pretty easy module to open once you get used to opening them. These cells come out pretty clean.
The best part about medical batteries is they often use a medical grade BMS. Which means the main connectors are usually gold plated for superior corrosion resistance. You can see the 7 main tabs would probably be worth trimming for those of you that like to salvage precious metals.
The BMS is likely proprietary so the value here is for the cells inside.
Genuine Sanyo UR18650F 2400mah cells with the green insulator ring made in Japan.
Fully charged - 4.2v
Fully discharged - 2.8v
Max continuous discharge recommended - 4.8a (2c)
Max continuous charge recommended - 2.4a (1c)