Test/review of GP Recyko+ 9V 150mAh 15R8H (Green-Black)

HKJ

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Mar 26, 2008
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9,715
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Copenhagen, Denmark
[size=+3]GP Recyko+ 9V 150mAh 15R8H (Green-Black)[/size]

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Official specifications:
  • Capacity: 150mAh
  • Voltage: 8.4V
  • Precharged
  • Lifetime: 6 years or 1000 cycles.

GP%20Recyko+%209V%20150mAh%2015R8H%20(Green-Black)-info.png


9V battery from GP with fairly low capacity



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GP%20Recyko+%209V%20150mAh%2015R8H%20(Green-Black)-Capacity.png


The battery do easily match the rated capacity, but it looks like there is some difference between the internal cells on the A battery (The vertical drop at the end).

GP%20Recyko+%209V%20150mAh%2015R8H%20(Green-Black)-CapacityTime.png


GP%20Recyko+%209V%20150mAh%2015R8H%20(Green-Black)-CapacityTimeHours.png


GP%20Recyko+%209V%20150mAh%2015R8H%20(Green-Black)-Energy.png


GP%20Recyko+%209V%20150mAh%2015R8H%20(Green-Black)-Charge.png


Because this is a battery the cells need balancing, on NiMH this is done by a low current overcharge.



[size=+3]Conclusion[/size]

The capacity is slightly on the low side, but being a LSD (Low Self Discharge) cell it do have its applications.



[size=+3]Notes and links[/size]

How is the test done and how to read the charts
Compare to other 9V batteries: Alkaline/NiMH/Lithium/other
 

Gauss163

Flashlight Enthusiast
Joined
Oct 20, 2013
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Conclusion The capacity is slightly on the low side, but being a LSD (Low Self Discharge) cell it do have its applications.

Most if not all apps will be far better served by 2S Li-ion 9V batteries given that they have 4x capacity (600mAh) and lower self-discharge. They're also half the price - a few bucks each in quantity (e.g. EBL, Soshine). I've been using them with great success for a couple years in all my 9V devices. Possibly these GP's might stay better balanced over many cycles in some contexts - but that remains to be seen (count me skeptical).
 

lightseeker2009

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Joined
Jul 29, 2009
Messages
681
How is one supposed to give this cell a slow charge, to keep the cells balanched, if standard over the counter chargers might not be slow enough?
 

HKJ

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Joined
Mar 26, 2008
Messages
9,715
Location
Copenhagen, Denmark
How is one supposed to give this cell a slow charge, to keep the cells balanched, if standard over the counter chargers might not be slow enough?

It is usual the top-off or trickle charge that do the balancing (Or a timer based charging), because my charging is computer controlled I simply added 1 hour of 10% charge current (I do that to all 9V NiMH batteries now).
 
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