Show pagesourceBack to top Share via Share via... Twitter LinkedIn Telegram Yammer RedditRecent ChangesSend via e-MailPrintPermalinkHelp or get help'd × Table of Contents Accumulators Voltage by accu technology charging / discharging common sizes Lithium Ion cells further reading Batteries Not to be confused with the legal term for hitting someone very hard. Accumulators In newspeak rechargeable battery or just battery, this device stores electrical energy in the form of a chemical potential difference. Voltage by accu technology Technology Vmax1 Vmin2 Amax (discharging) Amax (charging) NiCd 1,28V 0,9V-1,1V 250mA-500mA NiMH3 1,26V-1,45V 0,9V-1,1V 250mA-500mA Lead acid 2,1V 1,4V-1,75V Li-Mn 4,05V-4,1V 2,7V-3,0V 5A-10A 1A-1,5A Li-Po 10A-15A 1A-1,5A charging / discharging Charging and discharging rate is defined as the C-Rate. Usually you want to charge at half the rate of the nominal capacity (0.5C or C/2).4 common sizes Wikipedia: List of battery sizes identifier type size usual technology used in AA round cell NiMH AAA round cell NiMH 10440 round cell Ø10mm x L44mm Li-Ion same size as AAA, but different voltage (3.7V vs 1.5V) 18650 round cell Li-Ion battery packs, laptop batteries, high-power flashlights, e-cigs Lithium Ion cells Opening 18650 cells: Panasonic Sanyo Sony Generic Lithium-ion Battery Teardown (Rinoa's Auspicious Travails, 2017) further reading Battery University [1] maximum voltage cells like this can sustain without being damaged [2] minimal voltage where the cell is usable, anything less might damage the cell [3] Nickel metal hydride [4] this means that if you want to charge a cell with 1000mAh, you should charge it for two hours at 500mA or less Last modified: 2021-07-16 19:25