Features: This auction battery pack replaces the original HP battery pack serial numbers HP 82001A and HP2001B. This battery pack is rated at: 2800 (Bonai) to 3000 3.6 volts, Ni-MH, 3-cell construction and rechargeable. Same size as the original battery pack. Each battery pack fits into the calculator case perfectly. Same connector geometry as the original battery packs. Will outperform the original HP battery pack rated at 450 maH. Each battery pack is free-replacement guaranteed for 30 days.
The 2800 Bonai Battery pack is an excellent battery pack. Eventhough it is labeled at 2800 it functions as well as any 3000 maH battery pack I sell. The Bonai cells are more expensive and hold the charge very well.
First Time Recharging: Be careful the first time you recharge the battery pack. Charge it for 30 minutes and see if the battery pack is warm. If it is warm then only recharge it for 30 minutes in the future.
Recharging: Your HP adapter will recharge the battery pack many times. A fully charged battery pack should last for about 1 hour +/- of continuous use. The HP adapter/charger will recharge the battery pack faster if you turn off the display, yet will also charge it with the display on. These batteries will completely recharge through your plugged in HP adapter OR my USB charging cable in about 1 hour. It should be rechargeable many times.
Battery Storage: Please protect your beautiful HP calculator! All new rechargeable battery packs will eventually leak a corrosive acid that may harm your calculator. However, as a precaution, write on the label the purchase date plus three years after installing it for the first time. Conservatively replace after three years (could last much longer). If you are not using the calculator for a long time, please consider removing the battery and place it in a sealed plastic bag. These devices are just too awesome to risk any potential damage.
Shipping: Shipping costs are listed below. For multiple battery pack purchases contact me for actual shipping costs.
BTW, 93.9% of my sales are mailed in one day.
Also check my other HP calculator battery packs (Spice, Classic and TopCat) and USB charging cables for the Classic calculators. I'm working on a stand alone Classic calculator USB charger.
Hope to add you to my list of satisfied customers. Since 2001 I've sold over 6,500 HP calculator battery packs.
Sincerely, Mark Hoskins