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Battery & charger reviews>Reviews


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Battery Reviews

AA Batteries

Table 1 is for batteries 2000mAh and over. Due to variations in battery capacity and charging conditions, any battery set within 5-10% of each other can be considered as equal in performance.

Brand

Performance

Voltage graph

Temperature graph

Cell capacity

Comment

Sanyo2500AA
12th charge

321.92 mins

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The Doc's performance choice.

Sanyo2700AA
11th charge

314.25 mins

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The Sanyo 2500s remain The Doc's performance choice.

CamPlus2800AA
13th charge

268.83 mins

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Does not perform as a 2800 rated battery, but one of the better Chinese made batteries.

UNiROSS2700
11th charge

286.66 mins

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One of the best Chinese batteries, also worked very well in a portable hard drive in the field.

Powerex2700AA
12th charge

318.31 mins

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The Doc would buy the Sanyo or Powerex 2500s and save a few dollars.

M-Energy27000AA
11th charge

191.66 mins

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Low price, poor performance.

PolarPower2600AA
12th charge

270.08 mins

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Click here. Great variation in cell capacity. All below rated capacity of 2600.

Not bad performance for the price, but quality remains an issue.

Powerex2500AA
12th charge

306.06 mins

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A good quality battery with excellent performance. Safe buy.

Powertech2500AA
12th charge

286.83 mins

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One of the best Chinese made batteries.

Powertech2400AA
12th charge

263.83 mins

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Nothing really stands out about this battery set. The Doc would prefer the Sanyo 2500s.

Sanyo2300AA
14th charge

267.08 mins

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The Doc ran tests at 10 ohms allowing him to update the data for this battery set.

UNiROSS2300AA
11th charge

241.83 mins

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Not bad, but not great either.

Duracell2300AA
12th charge

199.66 mins

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Click here. Great variation in individual cell capacity.

The first time The Doc has tested a battery set made in Singapore, the results are disappointing. Better value found elsewhere.

Duracell2100AA
12th charge

222.41 mins

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 Click here. Note the poor capacity of one cell.

The Varta 2100 is a better performer.

Sanyo eneloop 12th charge

216.91 mins

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Good performance for a 2000 mAh rated battery, and fantastic self life for a Ni-MH.

Sanyo eneloop 2000AA, out of the box

184.66 mins

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The batteries were made in May 2006 and tested on 29 Oct. So they were at least 5 months old. That is fantastic performance for a Ni-MH battery. Further testing under way.

UNiROSS Hybrio 2100AA, 12th charge

241.5 mins

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Impressive! Even better than the Sanyo eneloop. Excellent buy.

UNiROSS Hybrio 2100AA, out of the box

198.66 mins

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The Hybrio are like the Sanyo eneloop, a Ni-MH battery that hold a charge for long period. Allegedly 80% for 6 months & 70% over 12 months. Fantastic performance like the eneloop.

Varta2100AA
11th charge

 245.5 mins

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Reasonable performance for a fair price. But the Doc would not use them in a high drain device.

Multiple Power 2000AA
11th charge

 137 mins

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Dreadful performance, poor build quality. Avoid.

Eveready2000AA
11th charge

 228.66 mins

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Decent build quality for a Chinese made battery, performance OK, but the battery is too expensive for the performance.

Powertech2000AA
14th charge

 248.41 mins

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The Doc ran tests at 10 ohms allowing him to update the data for this battery set.

 

 

 Voltage comparison, click here 

 

 

Reports using the old 5 ohm methodology can be read here. Plus results for AA batteries less than 2000 mAh.

AAA batteries

AAA League Table, see who the winner is, press here. If the graph does not display correctly, just press the refresh button.

Due to variations in battery capacity and charging conditions, any battery set within 5-10% of each other can be considered as equal in performance.

Brand

Performance

Voltage graph

Temperature graph

Cell capacity

Comment

Duracell1000

117.25 mins

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Great performance, but expensive.

Sanyo1000

110.25 mins

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Again, great performance, but expensive.

UNiROSS900

99.66 mins

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A good performer, but the eneloop is better overall.

Powertech900

95.58 mins

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Good performance for the price.

CamPlus900

75.91 mins

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Poor performance. Buy Sanyo of Duracell.

Multiple Power 900

54.41 mins

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Poor performance. Poor build quality. Not saved by low price. Avoid.

Sanyo eneloop 800

97.75 mins

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The Doc' performance choice.

Sanyo800

95.9 mins

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A good performer, now unseated by the Sanyo eneloop.

Varta800

86.33 mins

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Reasonable performance for the price.

Powertech800

89.55 mins

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The Doc' value choice.

Energiser750

86.5 mins

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The Doc' value choice.

Dorcy750

87.83 mins

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Cheap but nothing really stands out about these batteries. I would stick with Duracell, Sanyo or Energiser.

Powertech650

87 mins

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Better value and performance can be found elsewhere.

Grandcell RAM

74.58 mins

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Not a bad choice for devices that are used infrequently over long periods.

 

 

 

 

 

 

 

 

 Voltage comparison, click here 

 

 


C batteries

The Doc was asked to test C size Ni-MH batteries by The Battery Wizard The results are posted over at their site. Click here and go the "Rechargeable batteries" page. Look for the datasheet under the C size battery.

D batteries

The Doc was asked to test D size Ni-MH batteries by The Battery Wizard The results are posted over at their site. Click here and go the "Rechargeable batteries" page. Look for the datasheet under the D size battery.

 

Charger comparison table

 
Universal Charger Comparison Table press here.

Mini Charger Comparison Table press here.

Individual charger reviews


Rezap 880 USB   Rezap RBC883   Powerbase C-T3   Vanson Speedy Box   DSE Speed   Grandcell
Titanium PowPower  Varta 15 minute charger

  Misc comments


Here is some data on primary cell carbon zinc and alkaline batteries, that may be of some use to better understand the performance of Ni-MH and Ni-Cd batteries. Click here.

 

  Battery Accessories


A new revised version of the battery case has been released in 2005. The review is here. The old review can still be viewed here.

Battery cartridges review. Click here.
 

 Updates


Updated now have there