A7SII NP-FW50 Battery Charger Tests

B

blafarm

Active member
Just thought I'd share the results of a charger test I just conducted.

I used four completely discharged, genuine Sony NP-FW50 batteries.
I simultaneously tested four different charging devices.
And I confirmed the charge level of each battery to eliminate potentially false charge indicator lights.



Sony A7SII Camera: Free
Charged via a 2.1 amp USB Charger
Time to Full Charge: 1 Hour 30 Minutes

Watson Duo LCD Charger: $79.95 (USD)
Charged via AC Power Mains
Time to Full Charge: 1 Hour 31 Minutes

OAproda Patent Portable Ultra Slim Charger: $7.99 (USD)
Charged via a 2.1 amp USB Charger
Time to Full Charge: 2 Hours 50 Minutes

Sony Charger Included with A7SII Camera: Free
Charged via AC Power Mains
Time to Full Charge: 3 Hours 50 Minutes


Conclusion:

I'm keeping the Watson Charger because it is as fast as the camera, charges two batteries simultaneously, has a very useful charge level indicator -- and it includes an AC power cord and a 12 volt car adapter.

I'm also keeping four of the OAproda Chargers because they are very small, very lightweight, very inexpensive and very convenience for travel. They also nicely leverage the USB chargers that follow me everywhere I go. The extra time they require to charge a battery, over the Sony Camera and the Watson Charger, is of very little significance for my workflow.

And finally, it turns out the charger that is included in the A7SII box is of absolutely no value to me. It is too big, too slow and can only operate on AC.
 
It is worth mentioning that my USB tests were conducted with dedicated USB charging cables -- which have larger conductors and no provision for data.
 
I'm not saying any of these chargers are bad, but keep in mind that a bad charger will kill all your batteries after a few cycles. Fast is not always what you want.
 
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