Today I’ve got 9 pairs of BASEN branded Li-Ion batteries in order to test them.
Full list:
Basen IMR 18350 700mAh 10A
Basen IMR 18490 1100mAh 15A
Basen IMR 18500 1100mAh 22A
Basen IMR 18650 1500mAh 20A
Basen IMR 18650 2100mAh 30A
Basen IMR 18650 2500mAh 35A
Basen NCR 18650 3000mAh
Basen NCR 18650 3200mAh
Basen NCR 18650 3400mAh
I don’t have such good equipment as HKJ has, but my iCharger 106B+ is accurate enough for good preview and it can do the graphinng
Methodology of the test - you can comment it if you like.
- measure the voltage of all batteries as they came
- make one charge/discharge at 1A using Basen own charger/charge cycle of each
- topping each battery to 4.23V with intellicharger i2 which is very consistent (bit over, but very consistent)
- resting a battery for a day and measure the voltage drop
- measure internal resistance
- discharge each pair simultaneously with iCharger 106B+ at 2A (1A for smaller one) recording discharge graphs
- another charge with topping
- discharge each battery with iCharger 106B+ at 5A (
3A for smaller ones) recording discharge graphs - publish the results as we go
I think this would be good enough for the consistent preview of the batteries. Not very quick nor very long.
First impression. Nice good looking design. Each packed in small cardbox without any marks. All packed in 3 bigger cardbox and everything in biggest one. Very well packed. About design, I would suggest to clearly mark the positive side with narrow yellow ring similar to Nitecore batteries. This would help to quickly recognize wrongly inserted one in the charger. It happened me few times I’ve inserted it wrongly.
I have realized I have to prepare new leads to do consistent and reliable test. So I will postpone test for some time….
2A discharges are almost done, already working on some 5A…… done! All the graphs are collected in the post #1
Click on the table above to see the full size.
Final verdict |
All the batteries are very good. Under wrapper there are some Sony, Sanyo, Samsung and Panasonic cells so the results are not surprise. It looks the IMR 18350 is underrated, it might be declared as 800mAh. The curve implies it could be discharged down to 2.50V. Also the cells are all very equal they don’t show any anomalies. I have to emphaze I’ve topped batteries with i2 charger so the cells were charged as much as possible. This has gave some higher results than Leaftye and HKJ test. Still good to know what are the highest marks you can expect. |
That’s all folks…… I hope it gives you some (good) feeling about those batteries.