For most electronic devices it is better to use NiMH batteries than NiCd batteries. NiCd batteries use Cadmium, a highly toxic heavy metal, that can damage the environment if not disposed of properly. NiMH batteries usually have a higher capacity than NiCd batteries of the same size..
Also, can I replace a NiCd battery with a Ni MH?
Many people have asked “can I use NiMH (Nickel Metal Hydride) batteries in my solar lights that have NiCd (Nickel Cadmium)?” And the answer is, yes! Not only can you replace with NiMH, but they are the better choice of battery as they have benefits that their NiCd counterparts don't. NiMH battery benefits: 1.
Beside above, what is the difference between NiCd and NiMH solar batteries? The NiMH has higher energy density than the NiCd battery and so, has twice the capacity of NiCd battery. This means there is no increased run-time from the battery with no additional weight. NiMH batteries are environment friendly than NiCd batteries since they do not contain heavy metals.
Also to know, can you charge a NiMH battery with a NiCad charger?
Nickel- and lithium-based batteries require different charge algorithms. A NiMH charger can also charge NiCd; a NiCd charger would overcharge NiMH. Do not leave a nickel-based battery in the charger for more than a few days. If possible, remove the packs and apply a brief charge before use.
Are NiMH and NiCd batteries interchangeable?
To some degree, Nickel Metal Hydride (NiMH) is interchangeable with Nickel Cadmium (NiCd) — with caveats. The issues related to replacing NiCd with NiMH are the charge methods, the discharge characteristics (specifically rate capability) and then the effect of both on cycle life.
Related Question Answers
Do Nicad batteries go bad?
The shelf life for nicad batteries is 36 months, according to Panasonic, (formerly Sanyo). Our experience is approximately 18 months. While we've seen nicad batteries that last past 18 months, they usually require many charge/discharge cycles to get it to perform at 80% capacity.Can I replace NiMH with lithium ion?
In general 1 Li-Ion cell replaces 3 NiMh cells in series, so in theory it should work. The details may be a problem because while there is a self discharge rate associated with NiMh cells, and they can handle some degree of overcharging, Li-Ion cells can't.How do you charge a Ni MH battery?
Overnight Charging The cheapest way to charge a nickel metal hydride battery is to charge at C/10 or below (10% of the rated capacity per hour). So a 100 mAH battery would be charged at 10 mA for 15 hours. This method does not require an end-of-charge sensor and ensures a full charge.How many times can NiMH batteries be recharged?
Q: How many times can a NiMH battery be recharged? A: Lower capacity rechargeable AA batteries of 1700 up to 2000mAh can be recharged up to 1000 times in overnight slow charge mode, while 2100 to 2400 mAh rechargeable batteries can be recharged up to 600 to 800 times in overnight slow charge mode.What is the difference between Ni Cd and Ni MH batteries?
Answer NiMH refers to Nickel Metal Hydride and NiCd refers to Nickel Cadmium. The major differences between the two types of batteries are is capacity, memory effect and environmental friendliness. NiMH batteries have high capacity, no memory effects and environmentally friendly.What's better NiMH or lithium ion?
Li-ion Pros Reliable: These have a significantly lower self-discharge rate than a NiMH battery. Small: They are smaller and lighter compared to NiMH batteries. Higher Voltage Output: A single cell can deliver 3.7v while even two NiMH cells can only give 2.4v.What does NiMH stand for in batteries?
nickel metal hydride
How long do NiMH batteries last?
approximately two to three years
What happens if you overcharge a NiMH battery?
Overcharged NiMH batteries can heat up very quickly, rising to temperatures that could damage either the battery or the electronics in the charging unit. To counteract this danger, some quick chargers are designed with a fan to keep the batteries cool.What is the best charge rate for NiMH batteries?
While NiCd batteries may be trickle charged at a rate of around 0.1C, this is considered too high for NiMH batteries and it is generally accepted that for most NiMH batteries trickle charging should be accomplished at a rate of about 0.05C.How hot should NiMH batteries get when charging?
(It is normal for NiMH batteries to get warm as they become fully charged, especially in a rapid charger). If the NiMH batteries get too hot to handle and stay that way for more than 20 or 30 minutes, then the NiCd charger is most likely overcharging the NiMH batteries and may shorten their life.Do NiMH batteries explode?
A NiMh cell is usually made with a steel shell, which can contain much higher pressures. If you have a NiMh failure event the chances of a violent explosion are much higher than with a LiPo cell. The flames from a LiPo cell are hotter, but the lack of flying steel shrapnel actaully make them a bit safer.Can you overcharge rechargeable batteries?
Don't overdo it. Disconnect chargers and devices with rechargeable batteries after the battery reaches full charge. Overcharging occurs when the device or battery is plugged into a charger after full charge has been reached and may reduce battery life.Do NiMH batteries have a memory?
Technically, NiMH batteries do not have a "memory effect", but strictly speaking neither do NiCds. However NiMH batteries can experience voltage depletion, also called voltage depression, similar to that of NiCd batteries, but the effect is normally less noticeable.What voltage should I discharge NiMH batteries to?
4 Answers. NiMH cells start at about 1.5 V right when fully charged, drop to about 1.2 V most of their discharge life, and are pretty much empty at 900 mV. Stopping there is usually safe. 800 mV is where you definitely want to stop to avoid damage.What is the voltage of a fully charged NiMH battery?
1.5 volts
How long do rechargeable batteries take to charge?
Charging Time for Different Types of AA Batteries Nickel-Metal Hydride (NiMH): Ultra Fast AA/AAA battery chargers take about 4 to 6 hours to simultaneously recharge four batteries. Conventional battery chargers may take 8 to 10 hours to charge two batteries.Can NiMH batteries be used in solar lights?
It's a good idea to replace the batteries in your solar lights regularly; perhaps every year or two. Almost all garden solar lights use low capacity rechargeable batteries. More recently, solar lights will use 1.2V NiMH (Nickel Metal Hydride) batteries. These newer NiMH batteries replace the old style NiCd version.Can regular rechargeable batteries be used in solar lights?
A. Yes you can replace your old solar light NiCad batteries with rechargeable NiMH solar light batteries which are best batteries for solar lights. You just need to check that they are 1. 
