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

N.N.	Troubleshooting flowchart for laptop and notebook battery problems. The battery won't charge or your notebook encounters a short power life? Start your investigation with this flowchart.
Apple MacBook Air	Battery replacement is easy.
Apple PowerBook G3 Pismo	Battery take apart photo gallery.
ASUS A2	These notebook accumulators are not meant to be disassembled by customers. But if you are a thrifty guy and always have a hard time to throw away stuff, you may try to disassemble it in order to replace just the failing cells. Before you cause damage on a vital part of the battery take this article as "what to avoid" topic.
ASUS M6N	Fix for bad battery contacts problem.
Canon Innova Book 360CD	Ni-MH Battery cell replacement and CMOS battery customization.
COMPAQ Armada 100S (aka Mitac 5133S)	RAM upgrade, hard disk upgrade and AMD K6-2+ CPU overclocking as well as underclocking instructions (with jumper settings and voltage table). Battery replacement (in German).
COMPAQ Armada M300	Complete disassembly instructions, pictures from inside the battery.
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.
DELL Latitude D500	How to open the sealed main battery of this laptop with a guitar pick. It had to be taken apart because the locking mechanism on the battery was broken. You can fix it by using the locking mechanism from another similar dead battery.
Fujitsu-Siemens LifeBook S-Series	How to rebuild a Li-Ion battery pack.
Fujitsu-Siemens LiteLine 6133 SX (aka Mitac MiNote 6133 SX, IPC Topnote 6133, HPC NOTE 6133, NetBook 6133, Notestar NP 6133)	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 600	How to get inside the battery, some take apart instructions and pictures.
IBM ThinkPad i1400	HOW-TO: Laptop resurrection and upgrade, battery revival, membrane keyboard repairs, trackpoint transplant, adding USB ports and wireless LAN.
IBM ThinkPad T2x	Rebuilding a laptop battery: when your laptop battery is about to give up the ghost, you are probably thinking of the typical three alternatives. The most obvious, of course, is "wow, what a great justification for buying a new laptop". With laptop prices falling and no such luck with battery prices, this almost makes sense. But, most of us will probably just bite the bullet and buy a new battery. The third alternative would be to replace the cells in the battery you already have. If you are not fairly skilled in working on electronics, this is not necessarily a good alternative. Financially, it also looks like a good choice.
Medion MD5400	Cleaning the cooling fan. Jumper settings to reduce the CPU core voltage, to gain longer battery uptime (in German).
OQO 01/01+	Battery rebuild: in a standard 4000Mah battery, there are 2 cells side by side in the casing, each having a +/- pathway on a ribbon connector back to the circuit board. The only difference in the double capacity battery is the two cells are actually double-stacked for 4 batteries.
Panasonic Let's Note Mini	How to take apart the battery (in Japanese).
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

Acer Aspire 5672WLMi	How to remove the default BIOS password by disconnectng the CMOS battery to resolve a standby problem.
Acorn A4	CMOS battery replacement.
Apple PowerBook Duo	How to replace the backup battery (in Japanese).
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.
Apple PowerBook 500	Auxiliary PRAM battery installation.
Apple PowerBook 540c	A notebook to Digital Picture Frame conversion. Disassembly tutorial, clock batter ressurection, wooden case HOWTO.
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.
GateWay 2000 HandBook 486	This article describes how to rebuild a battery for this notebook so that standard rechargeable AA cells can be used.
HP Pavilion N5190	Shared knowledge: a take apart picture gallery and disassembly guide. Cleaning the fan from dirt and remounting the CPU using thermal conductive paste. Upgrading the hard drive. Replacement of CD/DVD, LCD video driver board and BIOS battery. Fixing a broken power adapter jack.
HP/COMPAQ NC6320	This guide explains how to remove and replace the display panel from. Also you can use this guide for: replacing or upgrading the memory module installed in the internal memory slot, removing and replacing the keyboard, removing and replacing the cooling fan, cleaning the heat sink, removing and replacing the CMOS (RTC) battery.
IBM ThinkPad 600E	How to power an external microphone. BIOS battery replacement instructions with pictures.
NEC Versa 4050H	How to change the clock battery which is located under the right wrist wrest, disassembly required (Sanyo CR2430 with Leads added. MnO2-Li cell 3V.) The Bridge Battery (Resume Battery) powers the system for up to 5 minutes while in suspend mode so you can swap main batteries without an AC connection. If you don't plan to do this, you may be able to function with this battery dead. Disassembly is required for replacement, too (NEC Corporation BH072600-54 7.2V 60mAh NiMH 29601A. This is a shrink wrapped pack of 6 Varta V60H NiMH batteries with leads and connector. Maybe the V60H has been replaced with the V70H which appears to be the same dimensions but 16% more capacity. Main Battery: NEC OP-570-61001 10.8V 25000mAh Lithum Ion.
Toshiba Tecra 520CDT	Complete disassembly to replace an old CMOS battery.
Toshiba Tecra S1	This guide explains how to remove the system board from the notebook. It will also illustrate how you can disassemble the notebook and remove, replace or clean the following parts: battery, hard drive, modem card, memory module, Wi-Fi card, CPU, heatsink, fan, keyboard, touchpad, dvd-rom, top cover, display assembly, speakers.

External Batteries

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