Questions tagged [nimh]
A nickel–metal hydride battery (NiMH) battery is a type of rechargeable battery. They have a better energy density than nickel–cadmium batteries (NiCd or NiCad) and have largely replaced them in many applications.
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End of discharge voltage for "refreshing" of NiMH cells
I have been reading some books on NiMH batteries. Some authors state that for optimum performance and longevity NiMH batteries need to be "exercised" or "refreshed" or "...
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Charging NiMH: What happens if your varying charge voltage goes too high or too low?
I'm researching NiMH batteries, and I understand that these batteries charge via CC, but what I don't understand is what happens if you have a CC source, but the voltage goes above the max battery ...
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Is it a bad idea to apply 12V to a NiMH 4S1P battery to revive it?
I have a stock of batteries with 4 NiMH cells in series. The issue is that many of them are at 2.4V, which is a very low voltage (0.6V per cell). I’ve seen articles suggesting that applying ...
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Charging Ni-MH batteries
I understand that the recommended charging voltage for AA/AAA NI-MH batteries is between 1.4 V to 1.6 V and c/10 charging current.
If i need to choose between 2 options:
Charging voltage of 1.4 V and ...
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Charging circuit for Raspberry Pi Pico
Currently I am working on a kind of pager project. The main idea is that a base station communicates via LORA with my handheld, similar to a DECT phone (Fritz!fon, Gigaset, ...)
The handheld should ...
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TP4056 charge discharge for a NiMH prius battery?
I want to make a capacity tester for a 6 cell module for prius batteries. They have 6000mAh new and anywhere from 2500-5000 mAH used. I was wondering if theTP4056 would work for a NiMH battery and if ...
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What ways can I test an NiMH battery aside from capacity
In my current job, I take used prius batteries and recondition them. I put them on RC chargers and the modules through charge/discharge cycles to both measure and raise the capacity. They have an ...
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D-cell Ni-Mh 12v battery-pack (10S) ok for a 12v device that can be a little heavier/bulkier?
In a previous question I was asking about a way to use dc charging in combo with an 18650 battery pack for an audiobox. Since site rules mean I cannot change or add to that question after it has been ...
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Modifying Li-po and NiMH batteries
I have three 2s 7.4V LiPo batteries, two balance LiPo chargers that can charge 7.4V/11.1V 1s-3s batteries, and soldering tools lying around, so I'm wondering: Can I convert the three 2s 7.4V batteries ...
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How might one attempt to recover a fully drained NiMH cell? [closed]
While the particular devices in this question are "consumer" NiMH cells; I am looking for a general answer, based on electrical engineering principles, that applies also to "non-...
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NiMH Battery Pack, lowest cell in pack dies
I've built several NiMH packs and for some reason, the lowest cell in each pack dies in storage. I recharge them once per month when in storage, and do a forming charge once every 3 months, but I keep ...
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Battery pack voltage keeps dropping without use
I have a battery pack for a circa 2008 Black & Decker 9.6 V electrical screwdriver. It was not holding a charge so I replaced its batteries. It had eight NiCd 1200 mAh batteries. I replaced them ...
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Selecting a charge time for a NiMH charger at 1C
I'm building a solar charger for an Energizer 8.4 V, 175 mAh NiMH battery with a MAX713. The solar panel is 15.4 V, 200 mA. If I charge them at 1C (175 mA), would it be better to set the charge time ...
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NiMH battery charging problem
I have a battery (8 cells in series, NiMH AA cells (1.2 V to 1.3 V), 1300 mAh per cell).
Cells used-
https://www.amazon.in/Rechargeable-NiMH-2300-Peak-Power/dp/B01MF8HUKO
https://www.amazon.in/...
