Sanyo Eneloop capacity tests.

[Erasmus]

I ordered some Eneloop cells at http://www.onlineshop.com.sg/ and they arrived yesterday. As indicated on the package, these are really 'ready to use' straight out of the package measuring all 1.31V.

Here are the test results measured with my La Crosse BC-900 :

[size=+1]First pack of 4 AA cells :[/size]

• date on batteries : 06-05
• out of the package they all measure 1.31V
• specified typical capacity 2000 mAh, minimum capacity 1900 mAh
• ---------------------------------------------------------------
• Test results :
• 2070 mAh
• 2080 mAh
• 2040 mAh
• 2050 mAh
• average capacity of 2060 mAh

[size=+1]Second pack of 4 AA cells :[/size]

• date on batteries : 06-05
• out of the package they all measure 1.31V
• specified typical capacity 2000 mAh, minimum capacity 1900 mAh
• ---------------------------------------------------------------
• Test results :
• 2110 mAh
• 2070 mAh
• 2130 mAh
• 2090 mAh
• average capacity of 2100 mAh

[size=+1]Pack of 4 AAA cells :[/size]

• date on batteries : 06-04
• out of the package they all measure 1.31V
• specified typical capacity 800 mAh, minimum capacity 750 mAh
• ---------------------------------------------------------------
• Test results :807, 820, 813 and 822
• 807 mAh
• 820 mAh
• 813 mAh
• 822 mAh
• average capacity of 816 mAh

All tested capacities are above the specified capacities. Great cells!

These cells are made in Japan. They travelled to Singapore and from Singapore to Belgium. That's quite a trip and probably there has been quite a difference in temperature. I read some information on the internet stating these cells are very sensitive to temperature, however there was discussion about it. I don't think it's true since my cells kept their voltages very well, even after a long trip and a few months after production.

Cheers,
Erasmus.

 

[dekelsey61]

Re: Eneloop arrived!

Sounds Great!! Has anyone heard if Sanyo is going to raise the Mah on there eneloop aa batteries from there present 2000Mah in the future? Thanks.

Dan

 

[Erasmus]

Re: Eneloop arrived!

Of course they will in the future, this technology keeps on developing every day. However I don't know if they have an official planning for higher capacity cell releases.

 

[Erasmus]

Re: Eneloop arrived!

First 4 AA's tested on La Crosse BC-900. Capacities are 2070, 2080, 2040 and 2050 mAh. This slightly exceeds the specifications of typical 2000 mAh and minimum 1900 mAh. Great stuff!

 

[citizenal]

Re: Eneloop arrived!

I have 16 AA's and they range from 2000 to 2200 mah. Some good stuff!

 

[Erasmus]

Re: Eneloop arrived!

Another 4 AA's tested today : 2110, 2070, 2130 and 2090 mAh.

 

[glire]

Re: Eneloop arrived!

Excellent !
Could you check the AAA's ?

 

[Erasmus]

Re: Eneloop arrived!

Excellent !
Could you check the AAA's ?

La Crosse is busy

 

[Erasmus]

Re: Eneloop arrived!

Here are the results for the Eneloop AAA's (specifications : typical 800 mAh, minimum 750 mAh) : 807, 820, 813 and 822 mAh. I will put all test results in the first post.

 

[Hans]

Re: Eneloop arrived!

Here are the results for the Eneloop AAA's (specifications : typical 800 mAh, minimum 750 mAh) : 807, 820, 813 and 822 mAh. I will put all test results in the first post.

That's pretty close to the results I got from the packs I bought when they finally hit the shops. My results for the AA's are also quite similar to yours. Seems like the Eneloops are really pretty good.

By the way, there's also a pack in the shops consisting of 2 AA's and a Sanyo NiMH "Quick charger" (NC-MDR03W). It's for charging 2 AA's or 2 AAA's. The output is 1.2V /600 mA for AA's and 1.2V/380 mA for AAA's. Approximate charging times are given as 250 minutes for the AA's and 170 minutes for the AAA's.

The leaflet that came with the charger also specifies temperature ranges of -20C to 30C for storage of the Eneloops, and of -5C to 50C when discharging them.

Hans

 

[glire]

Great !

Do someone know if there are plans to commrecialize eneloop batteries in the small form factor "9V like" ?

I use sometimes primaries 9V but never bought rechargeables because I don't use them very often. And when used it's always in long runtime devices, like my digital multimeter. The self discharge of NiMh would iritate me in my DM.
I also try to avoid buying stuff using 9V, but that may change with eneloop.

There are lots of devices using 9V that could benefit from eneloop:
-RC toys emitters
-alarm backup power supply
-fire detectors
-multimeters
-LED gadgets
-emergency flashlights

 

[VidPro]

Re: Eneloop arrived!

That's pretty close to the results I got from the packs I bought when they finally hit the shops. My results for the AA's are also quite similar to yours. Seems like the Eneloops are really pretty good.


Hans

same here, i didnt write it down, but the OPs test results look almost exactally like mine.
i used relative rates for the battery type 500-700 (250-350 discharge) for the AA and 200-500 (100-250 discharge) for the AAA.

 

[EngrPaul]

Those are the same results as I get with Energizer 2300's.

Sanyo represents their product's capacity properly, that's good to see.

 

[Carbo]

Could someone help the truly unenlightened among us?
I recently purchased a dozen Eneloops and the MH-C9000 charger. How do I go about testing the batteries capacities on this model charger?

 

[EngrPaul]

Carbo,

Anytime you fully discharge the battery from a fully charged state, the capacity will be displayed on the MH-C9000. There should be a rest period of about 1 hour between charge and discharge.

This can be achieved by break-in, recharge & analyze, and discharge modes. At the end of the procedure the unit will display the test capacity.

 

[Al]

Eneloop vs. Hybrid?

 

[Lightening]

Read that eneloops are refrigerated at transport

 

[koala]

If self discharge rate increases with capacity increase, I rather have the 2000mAh.


Hi Lightening,
Very interesting indeed, can you show us where you read that?

Read that eneloops are refrigerated at transport

 

[Phaetos]

I just love resurrected threads :sick2:

Though I didn't know that the Eneloops had been around that long. I just heard of them a few months ago. :shrug:

 

[Power Me Up]

I just love resurrected threads :sick2:

Though I didn't know that the Eneloops had been around that long. I just heard of them a few months ago. :shrug:

They've been around for even longer than this thread might suggest - they became available in November 2005:
http://www.sanyo.co.jp/koho/hypertext4-eng/0511/1101-2e.html