On some of them batteries are die, all of it use 18650 and he now try to replace it with a new ones… We open up a battery with mark on it EN-EL4 and inside of it are 3x 18650 some strange colour and even stranger sign : HH7FHH2 and numbers below that 057100
I have no idea what 18650 battery is this, the only thing I can think of that it is some Nikon battery that they made for their own cameras etc.
Problem is that their original battery ( Nikon ) with 2600 mAh 11.1 v, when using in camera can make 1000+ shoots before batery empty to the end… And we try to put 3x Samsung FM 2600 mAh, 5.2 A ( new ones ) and they can make only 300+ shoots :cry:
So what the hell is in that Nikon or whatewer 18650 batteries that can last so much longer than Samsung cells with same mAh ?
The only thing I can think of is that original bateries of Nikon can deliver more amps, but I don’t know how much is that important, I do not understand in cameras, so need some experienced member in this field to help ?
Yes it have makes sense, since old batteries are been in that electronic it remember their last usage/capacity… So with new ones it behaves like old ones are still inside.
We will try this, if I able to find on internet how to do that.
A very simple check if if the battery shows its empty measure the voltage on the cells
If its 2.5-3V the cells are fully drained
If its above 3.6V there is still energy in the cells
A short google search shows that the battery needs calibration
I remember many years ago, i bought a used nikon D1H, that used nimh batteries in the battery pack. The packs often didn’t last very long, so mine were quite bad when i got them. but i had read that you could mod the battery pack and use 2x 18650 li-ion batteries. so i opened up the worst battery pack and managed to somehow mod it into accepting 18650 batteries. I still have it, but i’ve lost most of my interest in photography.
(not that this answered your question in any way though )
Yes, but that 18650 are closed and we can reach them :cry:
After we repack a battery we glue plastic around it and now we must to destroy all to open it.
But we did some other battery repack and this time with VTC 5 ! This VTC 5 configuration make 1000 shots after fully empty !
So i assume that this cameras really need a cell with more amps, if somene have it and do a repack I want to hear what results with which cells he got.
The special Nikon chargers have a calibration mode, that first charges the battery, then drains it completely and recharge. After this cycle the BMS will report correctly again. Simply press the calibration button after inserting the battery. But be aware, that this cycle takes some time to complete.
May I know how you replace EL4 with 18650? Is there any adaptor for it? I am asking because I am also using EL4 and I am expecting one day my EL4 are going to die and I need to find replacement solution as well. Thanks.
Remember, the cells are connected in series, so one weak cell is enough to weaken the whole package. Maybe one cell was slightly damaged by heat in the process of soldering the cells together?
Don’t understand you, adaptor for what ?
Just open a pack, desolder old ones, and put new ones.
Maybe but, I don’t thinks that happens 2 times on Samsung and Panasonic, and that Sony went well… I think that is about a current that cell can deliver, since Sony is 30A max.
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