Test/review of Fujitsu AAA HR-4UTI 750mAh (Blue)

HKJ · 2019-10-18T12:17:35.000Z

Fujitsu AAA HR-4UTI 750mAh (Blue)

Official specifications:

Typical capacity: 800mAh
Minimum capacity: 750mAh
Nominal voltage: 1.2V
Fast charge current: 750mA
Internal impedance: 40mOhm at 1kHz
Weight: 11g
Low self discharge.
Ambient temperature: Fast charge: 0°C ~ 40°C, Discharge: 0°C ~ 50°C, Storage <90 days: –20°C ~ 40°C, Storage < 1 year: –20°C ~ 30°C

Maximum temperature raise at different discharge currents: 1A:+2,7°C, 2A:+6,3°C, 3A:+9,9°C, 5A:+14,7°C
Fujitsu has multiple series of AAA NiMH batteries, here it is the blue version.

I ordered two batteries, but the shop was obvious out of two-packs.

The two cells tracks nicely and capacity drops a bit with load, the 5A test was above the cells abilities.

Conclusion

Looks like good AAA batteries.

Notes and links

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

ChibiM · 2019-10-18T13:27:56.000Z

Thanks for the review HKJ!

Did the package say something about the cycle life?

HKJ · 2019-10-18T13:29:29.000Z

ChibiM:

Thanks for the review HKJ!

Did the package say something about the cycle life?

Look at the photos, I did not get a package. I found a datasheet, but it did not list anything about cycles.

ChibiM · 2019-10-18T13:33:04.000Z

HKJ:

ChibiM:

Thanks for the review HKJ!

Did the package say something about the cycle life?

Look at the photos, I did not get a package. I found a datasheet, but it did not list anything about cycles.

Got it, thanks HKJ.

I could only see some plastic... so it wasn't clear to me if there was a package inside :)

Superstocker · 2019-10-18T14:37:06.000Z

Thanks HKJ!

samgalax · 2019-10-18T18:19:35.000Z

Are they LSD?

AA_Cycler · 2019-10-18T18:47:30.000Z

ChibiM:

Did the package say something about the cycle life?

The Blue AAAs seem to have only 60% life cycle compared to White AAAs

Fujitsu White AAA - 250
Fujitsu Blue AAA - 150

The Blue AAs seem to have 70% of cycle life compared to the White AAs

Fujitsu White AA - 310
Fujitsu Blue AA - 220

Cheers,
AA Cycler

HKJ · 2019-10-20T17:23:12.000Z

samgalax:

Are they LSD?

I did write Low Self Discharge in the review, but I could not find any specifications what they mean by that.