Rechargeable Batteries

Symbol Name Cycle life (to 80%) Fast-charge time Overcharge tolerance Operating Temperature Self-discharge (per month) Maintenance requirement Discharge preference Notes
NiCd Nickel Cadmium 1500 1.5h moderate -40 to 60°C 20% (10% 1st day) 30 days Full 1
NiMH Nickel-Metal Hydride 500 2-4h low -20 to 60°C 30% 90 days Shallow 2
SLA Sealed Lead Acid 200-500 8-16h high -20 to 60°C 5% 3-6 months Shallow 3
Li-ion Lithium Ion 500-1000 3-4h very low -20 to 60°C 10% N/A Shallow 2
Li-polymer Lithium Polymer 100-150 8-15h N/A N/A N/A N/A Shallow 2
Reusable Alkaline Reusable Alkaline 10 2-3h moderate 0 to 65°C 0.3% N/A Shallow 2

Notes:

1. Do not leave connected to charger after cell is recharged; discharge fully before recharging.

2. More recharge cycles if the battery is not fully discharged before recharging.

3. Can be recharged 150 times w/ 100% discharges, 400 times w/ 50%, and 1000 times w/ 30%

[source: "Batteries in a Portable World", Buchmann, 1997 CADEX; ISBN 0-9682118-0-1]


Last Updated on 9/9/99
By johnson_d