Repairing of Laptop and Notebook Batteries

Do you need to solve a problem with your laptop or notebook battery? Do you want to build a battery yourself? Here are links to do-it-yourself instructions. If you have written a free guide yourself (or if you know of a report not linked here), please submit a new entry.

Main Battery

ASUS M6N	Fix for bad battery contacts problem.
Canon Innova Book 360CD	NI-MH Battery cell replacement and CMOS battery customization.
COMPAQ Contura 4/25cx	Pictures from inside the laptop. Voltages on the power supply interface and battery pinout. Circuit diagram of the 4 MB memory module. Circuit diagram of the 16 MB memory module. Motherboard outline with chip product numbers.
COMPAQ LTE 5100	Build your own battery.
Fujitsu-Siemens LifeBook S-Series	How to rebuild a Li-Ion battery pack.
Fujitsu-Siemens 6133 SX (aka Mitac 6133 SX)	Complete disassembly, upgrade tips for CPU and battery repair (in German).
GateWay 2000 HandBook	Extending the EDO-RAM to 16MB, replacing the hard drive with a 1GB CF card connected to a CF-mini-IDE adapter, changing the CMOS battery, extending the battery capacity six times and building an on/off switch for the internal speaker.
GateWay 2000 HandBook 486	How to open the machine, upgrade the RAM, replace the hard drive with an 800MB flash drive, replace the CMOS RAM backup battery and build a 4 AA NiMH battery pack.
IBM ThinkPad 600	Battery Page.
IBM ThinkPad 600	Battery problem.
IBM ThinkPad (misc. models)	Investigation and repairing of a non-charging Li-Ion battery (in German).
IBM ThinkPad i1400	HOW-TO: Laptop resurrection and upgrade, battery revival, membrane keyboard repairs, trackpoint transplant, adding USB ports and wireless LAN.
Medion MD5400	Cleaning the cooling fan. Jumper settings to reduce the CPU core voltage, to gain longer battery uptime (in German).
Sony VAIO PCG-505FX	How to rebuild your BP51 Li-Ion battery.
Sony VAIO PCG-505TS	Breathing new life into the dead battery pack.
N.N.	Batteries for Portables: the dirty little secret.
N.N.	Linux tools for batteries in laptops and PDAs.
N.N.	Take these practical steps to extend your battery's operating time and the life of the battery itself.
N.N.	Talk to your battery: battery refurbishment programs (a small download, linux required) for notebook batteries controlled by the BQ2092 and BQ2040 (and maybe others).
N.N.	HOW-TO: Rebuild your laptop battery.

Auxiliary CMOS Battery

Apple PowerBook Duo 2xx	Memory upgrade, keyboard exchange, hard disk upgrade, modem installation, backup battery replacement (in Japanese).
Apple PowerBook	Marking a set of batteries by laser etching, to avoid confusion when switching the batteries.
Canon Innova Book 360CD	NI-MH Battery cell replacement and CMOS battery customization.
COMPAQ Armada 1130T	Changing a flat CMOS battery and upgrading the hard disk.
COMPAQ Contura Aero	How to replace the CR 1220 CMOS battery.
COMPAQ Contura Aero	An illustrated step-by-step CMOS battery replacement guide.
GateWay 2000 HandBook	Extending the EDO-RAM to 16MB, replacing the hard drive with a 1GB CF card connected to a CF-mini-IDE adapter, changing the CMOS battery, extending the battery capacity six times and building an on/off switch for the internal speaker.
GateWay 2000 HandBook 486	How to open the machine, upgrade the RAM, replace the hard drive with an 800MB flash drive, replace the CMOS RAM backup battery and build a 4 AA NiMH battery pack.
IBM ThinkPad 600E	How to power an external microphone. BIOS battery replacement instructions with pictures.
Toshiba Tecra 520CDT	Complete disassembly to replace an old CMOS battery.

External Batteries

Toshiba Libretto 50, 100	Build an efficient 8-hour external battery for only $70!
Valence Technology N-Charge	Take apart and unsoldering an external laptop battery.