RediLast 2900mAh (Black)

I bougt this battery ½ year ago, i.e. it has probably slightly reduced capacity due to age.



Official specifications:

• 2900mAh Capacity
• Protected against: overcharge, overdischarge, short circuit
• Cell Made in Japan
• 4.20v±0.05 charge voltage
• 2.50v cut off voltage
• 3.6v Nominal voltage
• Charging type: CC/CV
• Max charge current: 1C (2.9A)
• Recommended charge current .3C
• Max discharge current: 5.8A
• Cell Size: ~18.5mm x 68.8mm

The cell used can be discharged down to 2.5 volt, in my test I only discharges to 2.8 volt, i.e. I do not measure the full capacity. But then, not all lights will be able to use the full capacity.























Conclusion


This battery uses a good cell, this secures many things:

• The batteries does match in capacity, i.e. they can be used in series.
• The battery is very safe.
• The battery has the specified capacity (But only when tested at the specified conditions).

All in all a very good battery.



Notes and links

How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries