That depends entirely on the rating of the charger !
Yes....... But........ 750mAh and 800mAh are the capacity of the battery. More capacity means more power. The handset always assumes that the proper batteries are inserted. If it was designed for 800mAh then the handset puts a charge of 800 into the batteries. If a 750mAh is inserted instead, it will overcharge the batteries. Overcharging is not good for batteries. Each overcharge will lessen the life of the battery. The batteries may heat up too much which could be dangerous. In the vice versa case it might happen that the 800mAh batteries are always charged only upto 750mAh, giving you the same performance and not better. So it completely depends on the way the handsets are designed.
Yes, your charger should be able to charge AAA 1800mAh batteries. It is common for battery chargers to be able to charge multiple capacities of batteries as long as they are compatible with the chemistry (e.g. NiMH, NiCd) and size (AA, AAA). Just make sure to follow the manufacturer's instructions for optimal performance and safety.
if they are rechargeble batteries then yes you can but they wont stay charged for that long
normally 8 hours
The batteries are over the counter watch batteries and they last twice as long as the battery put into the walker
Yes, as long as you have the charger or cord you can charge energizer camcorder batteries. They typically have a life of at least three years being recharged.
A set of NiMH AAA batteries can last roughly a month on a full charge if they are not being used at all and are simply allowed to sit around. In devices such as cameras and small pda's where rechargeable batteries are best used, the batteries can last nearly as long as normal alkaline batteries on a full charge. Exact times depend on the capacities of the NiMH batteries. A charge lasts long enough for a camera to be used normally for several days and hundreds of shots. As long as the NiMH batteries are not allowed to be idle and self-discharge, the life of a single charge is almost as long as a full alkaline battery. The life of the battery itself can easily be several years. NiMH batteries don't need much maintaining and can last for hundreds of charge cycles.
It takes about takes approximately 220 minutes to charge four NiMH batteries with the Canon 6872A007
It should take roughly 1-3 hours to charge the batteries in a hoverboard.
There are a wide variety of batteries available to the consumer but Duracell has been proven to be one the most popular brands. These batteries perform well and last a long time. Their rechargeable batteries hold a charge for a long time which is a desirable feature in rechargeable batteries.
They claim to be the best of both worlds: rechargeable batteries and disposable batteries. The disposable batteries hold their energy for a long time on the shelf, while rechargeable batteries did not. The eneloop offers the convenience of being recharged, while holding the charge for a long time.