Voice Recorder Rechargeable Battery

life24

Senior member
Mar 25, 2014
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Hello,
I have a ICD-UX523F and i want buy a new rechargeable battery.
The original battery is NH-AAA 1.2V 800mAh.
Can i buy a new battery with higher mAh? for example 1350mAh?
What is difference?
Thanks
 

corkyg

Elite Member | Peripherals
Super Moderator
Mar 4, 2000
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That is a Sony Recorder. The specified battery is a single NiMH, AAA rechargeable. If you can find a AAA rechargeable with greater capacity, you should be able to make the swap.

The difference should be longer battery life. The AAA form factor is the same.

A portable voice recorder is not a computer peripheral, but a gadget. So, I am moving the thread to the Mobile Devices and Gadgets Forum.
 
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paperwastage

Golden Member
May 25, 2010
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Capacity is a function of the size

For AAA rechargeable, I think the current max is around 1000mAh from a reputable brand. Don't trust an eBay seller who advertises 3000mAh for AAA(fake), or 1500mAh (most likely abuses the battery too much and degrade its life faster)

10-20% increase is decent (from your older technology cell to the latest gen cell). Battery tech hasn't really improved a lot (compared to CPU/Moore's law)
 
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corkyg

Elite Member | Peripherals
Super Moderator
Mar 4, 2000
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I find that Energizer Rechargeable AAA's are 1.2 vdc, and non rechargeable are 1.5 vdc. I have no problem using them interchangeably.

This table indicates the differences:

https://en.wikipedia.org/wiki/AAA_battery

Looks like NiMH batts are 1.25 vdc.
 
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balloonshark

Diamond Member
Jun 5, 2008
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Panasonic Eneloop's are excellent rechargeable batteries. Their regular version is 800mah while their pro version is 950mah. More mah = longer runtime. From a quick search the Pros are slightly larger in diameter so they may not work in all applications.
 

Oyeve

Lifer
Oct 18, 1999
22,043
875
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No difference between AAA 1.5V and AAA 1.2V ?

Nope. 1.2 rechargables will always give out a constant 1.2v until the charge dies. 1.5 reg batteries are never a 1.5 for long, if at all. they usually hit 1.2 almost instantly.
 

life24

Senior member
Mar 25, 2014
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Hi,
I bought a AAA 1.2V 750mAh battery
But it has 1.59 V :eek: , tested with digital multimeter
How is it possible?
 
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balloonshark

Diamond Member
Jun 5, 2008
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Rechargeable AAA with 1.2v
1.2V is the nominal voltage for LSD (low self discharge) nimh batteries. My eneloops arrived from the factory at about 1.33V and are about 1.45V fresh off the charger.

I believe my non-lsd nimh batteries for my RC trucks end up about 1.5V fresh off the charger but they quickly self discharge.

Are you sure you meter is accurate? Do you have a link to the batteries you bought?
 

balloonshark

Diamond Member
Jun 5, 2008
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Those are supposed to be low self discharge ni-mh batteries so I would say your meter is not completely accurate. Either way I don't think they will hurt your device.

This is assuming you bought from a reputable source and the batteries are not knockoffs.