EverActive NC1000 Plus charger - does not fully charge the batteries

I have an everActive NC1000 Plus charger and new AA GP2500, AA Duracell2500 batteries.
When I connect the rechargeable batteries to charge, they charge until they reach the voltage (measured on the charger) about 1.40-1.43 V. The problem is that as I put a charged battery in the wireless keyboard, it detects too low keyboard voltage and stops working properly.
The question is why the batteries do not fully charge, i.e. 1.50 V? As I measure charged batteries with a meter, the measured voltage is even lower of 1.38V.

If they are NiMH, the output voltage is 1.2V.

The charger probably recharges them to 1.5V, but when it stops charging, the battery voltage drops and this is normal.

Remember that Ni-Mh batteries have a working / average voltage of 1.2V. Some devices may show that there is no maximum charge level.

If you have such an advanced charger - do the test, charge the batteries in it and then perform the discharge with the measurement of capacity. You'll see if they are topped up to the end.

pietia86 wrote:

Remember that Ni-Mh batteries have a working / average voltage of 1.2V. Some devices may show that there is no maximum charge level.

+1
As far as branded electronic devices have clearly written acceptance of the battery in the instructions, or if they do not have, by implication, no acceptance (or at least no promises from the manufacturer)

I will add, for low-current devices (and the expected long time), I think that it makes sense to use an alkaline battery, for example, NiMh battery even without power consumption has self-discharge measured in a few weeks (and consequently they fall quite quickly, although they do not undergo typical wear). Alkaline comes half a year, or five years, until electric exhaustion.

@JacekCz Low-current (but not exaggerated) solutions work well with Sanyo / Panasonic Eneloop.

It's a shame to admit, but I just checked and my batteries are 1.2V (NiMH).

Can you possibly recommend any 1.5V rechargeable batteries?

No, because there are no such. Ni-Mh are by definition 1.2V.

And other rechargeable batteries, not NiMH?

No-NiMh then go to wikipedia, type "battery list" or something similar and it will pop up. Other batteries with different chemistry, of course, have different voltage but also different shapes of use and most importantly other charging systems.

viper111 wrote:

And other rechargeable batteries, not NiMH?

There are Ni-Zn batteries, they have a voltage of 1.6V. However, they have a smaller capacity than Ni-Mh, about 600mAh for AAA and about 1500mAh for AA. They also require a special charger because the final voltage when charging reaches 1.9V. And they are more expensive than Ni-Mh.

I found something else like Fenix ARB-L14-1600u, anyone used?

To be honest, I see this invention for the first time. The point is that it is a Li-Ion battery and the total output voltage is 1.5V, while lithium batteries are usually around 3.6 - 3.7V. By. there must be a converter there, and this in turn will cause that in my opinion this equipment will not be suitable for use in low-current receivers (by the discharge itself through the converter).

Another issue is the price of such a solution.

In fact, I don't know if it makes sense to fight for batteries in a wireless keyboard.

Maybe you'd better buy good alkaline batteries. For example, in my A4tech computer rodent, the batteries last for at least 4 months. I know that the keyboard is different, but it may be worth it ...

pietia86 wrote:

Maybe you'd better buy good alkaline batteries.

And here you are wrong
Lithium cells (not to be confused with LiIon) are best for equipment with low power consumption.
I mean something like the 6106 varty.
At low currents (10-50mA) their capacity is actually 2900mAh, no alkaline wonders have such capacity, well they have exceptions but they are more expensive (duracell turbo maxx)

You are right, a decent battery and half a year will work in such a rodent and in the remote control it goes into years.

bestboy21 wrote:

You are right, a decent battery and half a year will work in such a rodent and in the remote control it goes into years.

That's exactly what I meant, i.e. not specifically to buy alkaline, but a "good" battery. Rechargeable batteries sometimes do not work with such solutions.

I found something ...
it is not possible to change the parameters of each chamber separately (during charging / discharging) - in the NC-1000 the charging / discharging current is not dependent on other cells previously installed. In the BC series, the current is limited to the value that we will set for the first battery installed - maybe you have set something wrong

The disadvantage of zinc batteries is the small capacity, about 600mAh for AAA and about 1500mAh for AA. Many manufacturers probably specifically indicate the capacity in mWh to make it look better on the label.

If I can, I'll step on it. I have such a charger, for a few days they had two AAA rechargeable batteries, and from today the charger does not work, it does not turn on at all. Are there any fuses in it?