Which rechargeable battery is better in Shelf life for 2-3 years

If a battery is on a shelf and you do nothing with it, its voltage will drop gradually, which is called shelf life of that particular battery.

I have recorded daily voltage drop of different rechargeable batteries for more than 10 years. I only put the first two to three year's data on the graph, since the software i'm using will not handle that amount of data.

The batteries which voltages were recorded daily are:

1. Rayovac rechargeable, AAA, NiMH. 1.2 V

2. Energizer AAA, NiMH, 1.2 V, 850 mAh

3. Power Genix rechargeable, NiZn, 1.6 V, 2500 mAh (average of 4 cells)

4. Duracell rechargeable, AA, NiMH, 1.2 V, 2850 mAh (average of 4 cells)

5. Raynovac Hyvrid AA, NiMH, 1.2 V, 2100 mAh (average of 4 cells)

6. 浩霸 haoba, rechageable, NiMH, 9 V, 280 mAh (voltages are devided by 7)

7. Raynovac rechageable, NiMH, 9 V (voltages are devided by 7)

8. Eneloop rechageable, AA, NiMH, 1.2 V, 1900 mAh

9. Digital rechageable, NiMH, 1.25 V, 1800 mAh (average of 4 cells)

10. Rayovac rechargeable, AA, NiMH. 1.2 V, 2000 mAh

11. rechargeabe 9 V,  lithium-ion battery. Missing in the picture, it was not mine, I don't own this battery

12. Tenengy rechargeable NiMH, 4/5A, 2000 mAh

Partial raw data recorded on the sheets:

A shelf life chart (rechargeable battery's daily voltage drop):

 

9 V, lithium-ion battery (for battery number 11):

Conclusion:

Best: Eneloop AA (Battery No. 8), Rayovac hybrid AA (battery No. 5), Rayovac  AAA (battery No. 1), lithium-ion battery (9V) (battery No. 11)

Better：浩霸 haoba 9 V (battery No. 6)

Worst: 

Battery No. 2. Energizer AAA, NiMH, 1.2 V, 850 mAh

Battery No. 3. Power Genix rechargeable, NiZn, 1.6 V, 2500 mAh (average of 4 cells)

Battery No. 4. Duracell rechargeable, AA, NiMH, 1.2 V, 2850 mAh (average of 4 cells)

Battery No. 7. Raynovac rechageable, NiMH, 9 V (voltages are devided by 7)

Battery No. 9. Digital rechageable, NiMH, 1.25 V, 1800 mAh (average of 4 cells)

Battery No. 10. Rayovac rechargeable, AA, NiMH. 1.2 V, 2000 mAh

Battery No. 12. Tenengy rechargeable, 4/5A, NiMH,  2000 mAh

 

所有跟帖： 

• 用的什么软件？还是测试仪有电脑接口（serial port, USB..） -位酷哥- ♂ (0 bytes) () 11/21/2023 postreply 08:07:16

• ORIGIN, just V-meter, write down V with a pen on a paper -xia23- ♂ (0 bytes) () 11/21/2023 postreply 08:21:17

• 蛙！十年如一日 -位酷哥- ♂ (0 bytes) () 11/21/2023 postreply 08:41:52

• 分享的全是干货啊 :-) -三步两桥- ♀ (0 bytes) () 11/21/2023 postreply 10:34:35

• 十年的记录，有点愚公移山的意思了 -永远老李- ♂ (0 bytes) () 11/21/2023 postreply 11:26:53