What is the discharge rate of a NiMH battery?
What is the discharge rate of a NiMH battery?
Nickel–metal hydride battery
| Modern NiMH rechargeable cells | |
|---|---|
| Specific energy | 60–120 W·h/kg |
| Self-discharge rate | 13.9–70.6% at room temperature 36.4–97.8% at 45 °C Low self-discharge: 0.08–2.9% (per month) |
| Cycle durability | 180–2000 cycles |
| Nominal cell voltage | 1.2 V |
How many amps does it take to discharge a NiMH battery?
Also whats the MAX you should discharge at? NiMH batteries used to matched by discharging them at 20-30 amps. In general, higher is better with those.
What is the normal discharge rate of a battery?
In this case, the discharge rate is given by the battery capacity (in Ah) divided by the number of hours it takes to charge/discharge the battery. For example, a battery capacity of 500 Ah that is theoretically discharged to its cut-off voltage in 20 hours will have a discharge rate of 500 Ah/20 h = 25 A.
Does NiMH need discharge?
NimH life can be enhanced substantially by never discharging them fully on any occasion. Even when using multiple sets during a day’s shooting, if you can manage to leave the last 10% or so of capacity in the battery you will get substantially longer life from them.
Why do NiMH batteries self-discharge?
NiMH self discharge cause These can broadly be described as an oxygen cycle that occurs at high states of charge, and then ion movement that contributes to the self-discharge over longer periods of time. One important factor in the rate of self-discharge is the temperature at which the cell is held.
At what voltage is a 12v battery 50% discharged?
A Specific Gravity of about 1
What is the maximum discharge rate of NiMH batteries?
Self-discharge rate: 20% in the first month, continuous decrease by month, 10 to 30% per year for low self-discharge models (depends on temperature) The life cycles of charge and discharge cycles: above 500 cycles Maximum 15C discharge rate NiMh batteries In general, there are three types of discharge rate of NiMh batteries:
What happens when a NiMH cell is discharged?
This is called “voltage depression” and is commonly attributed to “memory”, but actually isn’t. Discharging a cell completely (not to zero volts!) and recharging causes all of crystals to be reformed at their normal smaller size, increasing their surface area and lowering the internal resistance of the cell.
Which is better a NiCd or NiMH battery?
The Nickel metal hydride (Ni-MH) battery is an improvement from nickel-cadmium (NiCd) batteries as it replaces cadmium with a metal that can absorb hydrogen. NiMH batteries can provide higher capacity, have less obvious memory effect, and be more environmentally friendly.
How often should I charge my NIMH transmitter?
NiMh doesn’t have a memory effect, so cycling is not required so often, but I believe an occasional cycle can help keep the cells in balance. I charge my small NiMh receiver and transmitter packs (1200mAh capacity) at somewhere around 1/10C overnight.
