I have a Sony VGP-BPS21A battery that I use to power my laptop. It is really old, like 5-6 years now and its cells have lost more than 50% of their capacity. As a new OEM is very expensive, hard to find and probably not recently manufactured, I decided to keep my battery controller and replace its 18650 cells.
So everything went fairly well, except I have broken the temperature sensor (a thermistor). Anyway, I have succeeded in fixing it and now my laptop powers on. However, it refuses to charge the battery.
I have checked some parameters my OS retrieves from the battery, and apparently it shows a capacity of 0.0Wh (previously 52.4Wh). I suspect important data was erased from the controller when I disconnected the old cells. I have googled some solutions to reprogram the controller, but only commercial solutions were found. Is there an easy solution to get the controller to charge the battery cells?
Free battery eeprom works lpt bq2060 download software at UpdateStar - 'Smart Battery Workshop' is a tools, which is useful in a process of notebook battery repair. Battery EEPROM Works 1.2 - Battery EEPROM Works is designed to simplify the process of laptop battery repair. This process can be divided in two parts: cells replacement and fixing the content of EEPROM or integrated Flash of laptop battery controller.
I have attached photos of the controller PCB.
Battery Ee Prom Works Crackles
IC1 is the MCU (R2J240 reference).
Kevin ReidBattery Eeprom Works 1.42 Crack
closed as off-topic by Nick Alexeev♦Dec 31 '15 at 21:32
This question appears to be off-topic. The users who voted to close gave this specific reason:
- 'Questions on the repair of consumer electronics, appliances, or other devices must involve specific troubleshooting steps and demonstrate a good understanding of the underlying design of the device being repaired. See also: Is asking on how to fix a faulty circuit on topic?' – Nick Alexeev
1 Answer
$begingroup$I have tried the suggestion given by Dwayne Reid here to try to recharge the battery with an external power supply, but it did not work, unfortunately.
Apparently, there are only commercial solutions to reprogram the EEPROM of the uC.
I would strongly advise against replacing the cells of your laptop battery, even if you can maintain the uC running. To have a satisfactory result from the replacement, you would need to reset the cycle counter and update the battery characteristics in the EEPROM. That is complicated and expensive to do.
