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09-22-2013, 06:32 AM   #1
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Location: Melbourne
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Pentax K20D Battery ( Result )

I recently purchased a spare battery for my K20D , and just recently decided to use it as the fact original was being charged ..
Having left the fully charged replacement in the camera , I was a little surprised to find the camera showing me the empty battery warning with so little use ..

I put the battery in the charger and in little to no time what so ever the battery was charged ? Ok , some thing is not right !

I measured the battery voltage ( 8.2v ) and then discharged the battery @ 0.5A or 500mAh to 6v ...

I was very surprised to find that only 379mAh had been discharged to 7v

986mAh @ 6v

Wow , for some reason the battery is discharging a lot of current at lower voltage , the only conclusion I can draw from this is that the batteries are low quality ..
Anyone know at what voltage the K20D throws up a low battery warning ?
Anyhow , a disappointing battery for sure ..

Link to battery on Ebay

Looks like Im in the market for another battery :

Cheap Ebay Battery
Capacity = 986mAh
Useful capacity = K20D battery warning ? ( Volts )
Claimed capacity = 1500mAh
Conclusion = Not a very useful battery


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