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Battery Care Advice – The Golden Rules to Help Your Batteries Last a Long Time

The following tips will help you achieve the best useful life for your rechargeables. Click a tip to get an explanation of why it is important.


NiCad, MiMH, Li-Ion Rechargeables

These types of batteries should last about 1000 cycles, if treated properly.

  1. Do not let battery packs get too flat!
  2. Do not overcharge!
  3. Do not keep batteries on charge.
  4. Do drain and fully recharge batteries roughly every 20 cycles.
  5. Do recharge NiCad’s every 3 months if sitting on the shelf unused.
  6. Do recharge NiMH batteries every month if sitting on the shelf unused.
  7. Do recharge Li-Ion batteries regularly if sitting on the shelf unused.
  8. Avoid charging or storing at high temperature.
  9. Do replace batteries that won't recharge or self-discharge in only a few days.
  10. Do clean battery contacts occasionally.
  11. Do not short circuit rechargeable batteries.

Sealed Lead Acid Batteries

These types of batteries should last at least 3 to 5 years in normal use.

  1. Do keep on trickle charge.
  2. Avoid completely draining the battery.
  3. Do not leave the battery completely flat.
  4. Do recharge every 6 to 9 months if sitting on the shelf unused.

HOW OFTEN TO RECHARGE IF UNUSED
NiCad 3 Months
NiMH 1 Month
Li-Ion 6 weeks to 1 year (dependent on smart circuitry, see Tip 7)
Sealed
Lead Acid
6 to 9 Months (keep on constant trickle charge preferably)

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