Test/review of Energizer D 2500mAh NH50 (Silver)

[size=+3]Energizer D 2500mAh NH50 (Silver)[/size]



Official specifications:

• Classification: Rechargeable
• Chemical System: Nickel-Metal Hydride (NiMH)
• Designation: ANSI-1.2H4
• Nominal Voltage: 1.2 Volts
• Rated Capacity: 2500 mAh* at 21°C (70°F) 500mA discharge to 1V
• Typical Weight: 73.0 grams (2.6 oz.)
• Typical Volume: 57.0 cubic centimeters (3.5 cubic inch)
• Terminals: Flat Contact
• Jacket: Plastic

Maximum temperature raise at different discharge currents: 1A:+0,3°C, 2A:+0,6°C, 3A:+1,3°C, 5A:+2,6°C, 7A:+3,6°C, 10A:+4,7°C, 15A:+5,3°C
This is low capacity D cells from one of the big brands and as can be seen on the photos the capacity is with a fairly discrete font.











The two cells matches fairly well and can deliver the rated capacity. At high current they are considerable better than AA cells.















[size=+3]Conclusion[/size]

These batteries do not have more capacity than AA batteries, but are better at high current. They feel very lightweight and my guess is that they contain a smaller cell inside.



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

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

Thanks. Depending on price, these look nicer than single AA and adapter.

they contain a sub c cell.
several times i have seen big box stores close these out for little of nothing and i bought all i could find.
the cheapest way to obtain sub c cells for tool pack rebuilds bar none.
the c cell also contains a sub c.

The C cell version of those cells are rated exactly the same mAh. They also feel lite weight like there is another smaller cell inside. If you tested the C version I would be surprised if you results were not the same as the D.


Thanks for the review


Frank

If there's no capacity benefit it sounds like I'd be better off with a D cell adapter for my aa's.

Hugh Johnson said:

If there's no capacity benefit it sounds like I'd be better off with a D cell adapter for my aa's.

Click to expand...

Seems that way to me.....why bother with these if they have little if any capacity over an AA Eneloop Pro in an adapter? Especially when good chargers that accept D cells are a lot harder to find than good AA chargers. I wonder if these are low self discharge?


Anyway, thanks to HKJ for the review!