A database of rechargeable batteries
Switch branches/tags
Nothing to show
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Permalink
Type Name Latest commit message Commit time
Failed to load latest commit information.
README.md
aa.csv
aaa.csv

README.md

battery

I run my electronics on Sanyo Eneloop rechargeable batteries. The batteries are charged with a PowerEx MH-C9000 charger.

aa.csv and aaa.csv are databases of my AA and AAA batteries, respectively. Each battery is labeled, and I track the date I purchased the battery, the current capacity, the date on which the battery was last charged, and the date on which the battery was last ran through the MH-C9000's refresh and analyze (R/A) mode. Tracking this information in git allows me to build up a historical record of an individual battery's performance.

The databases are tab-delimited CSV files. Fields are separated by multiple tabs so that the files are more pleasant to view in a text editor. If a graphical spreadsheet program is used, the program should be told to merge delimiters for viewing. The files can be also be simply viewed on the command-line.

$ column -t aa.csv | less -NS -#2

Charge / Discharge Rates

Eneloop AA batteries have a listed capacity (C) of 2000 mAh. Eneloop AAA batteries have a listed capacity (C) of 800 mAh.

Maha / PowerEx recommends charging batteries at 0.5C and discharging at 0.25C. I've begun to charge AA batteries at 0.3C which seems to result in a higher capacity with no ill effects.

AA

Charge: 600 mA Discharge: 500 mA

AAA

Charge: 400 mA Discharge: 200 mA