![]() ![]() For high drain devices such as remote control toys or digital cameras using a flash, a higher capacity standard NiMH rechargeable may be more suitable, as they will have more power over the first few days before the benefits of a stay-charged battery are applied. In practical terms, using stay-charged batteries for everyday devices (that don’t drain the batteries completely in a short period of time) means they will retain their power when not in use and so will be ready to use and not need recharging as often. By comparison, Stay-charged batteries have a low self-discharge rate of around 2-3% per month, therefore retaining their charge and remaining ready to use. This occurs when the internal chemical reactions reduce the stored charge of the battery even when the battery is not in use. Standard NiMH rechargeable batteries (those that do not have the Stay-Charged technology) will gradually lose their power over a period of weeks and months even when not in use (around 30% per month) in a process known as ‘self-discharge’. Stay-charged rechargeable batteries hold their charge much more effectively when not in use. RETURN TO TOP What does 'Stay-Charged' mean? ![]() However there would be no detrimental effect on the radio, and the majority of DAB radios will work well using rechargeable batteries without any problems. For example when using four or six batteries in series in some brands of DAB radio, the voltage difference between four alkaline batteries (4 x 1.5 volt = 6 volt total) and four rechargeable NiMH batteries (4 x 1.2 volt = 4.8 volt total) can lead to shorter battery lifespan. However there are some exceptions where the difference in voltage can cause poor performance. This means that in the vast majority of devices the voltage should not be an issue when replacing single-use batteries with rechargeable batteries. The major difference is that single-use batteries output 1.5 volts when first used and end below 1.0 volts, whilst rechargeable NiMH batteries maintain an average of 1.2 volts for most of the time. So throughout the time the batteries are used, single-use batteries’ average output is 1.2 volts, similar to that of rechargeable NiMH batteries. The exception being PP3 9 volt block size battery, and some specialist security batteries, which can be higher depending on the size and type of battery.Īs single-use batteries are consumed, the voltage reduces. Standard size single-use batteries usually have a nominal voltage of 1.5 volts whilst rechargeable batteries are 1.2 volts. ![]() RETURN TO TOP What is the difference in voltage between rechargeable batteries and single-use batteries? See the FAQ on voltage for more information. There may be some devices where rechargeable batteries may not be suitable, for example some brands of DAB radios where four or six batteries are used in series, and the voltage difference between NiMh rechargeable batteries and standard alkaline batteries can cause poor performance. The main benefits are that after the initial investment they will save you money as you can reuse those batteries hundreds of times and they have the added benefit of helping the environment by saving raw materials and avoiding the waste of single-use batteries which may eventually end up in land-fill. In most situations, nickel metal hydride (NiMH) batteries can replace (single-use) primary batteries, especially for high drain electronic devices. RETURN TO TOP Can I use rechargeable batteries in devices that use single-use or alkaline batteries? Common rechargeable battery types include nickel metal hydride (NiMH), nickel cadmium (NiCd) and lithium ion (Li-ion) batteries. Rechargeable batteries can be recharged and reused from 500 to 1000 times depending on usage. Common primary battery types include alkaline, carbon zinc, lithium, silver oxide and zinc air batteries. ![]() Single use batteries (also known as primary batteries) are the same as disposable batteries, which are designed not to be recharged and have to be discarded when flat (or discharged). What is the difference between a battery code that starts with a HR (such as HR6) and an LR? What is the difference between single-use (primary) and rechargeable batteries? What is the best type of battery for my smoke alarm? What is the best type of battery for my solar garden lights? What is the best type of battery for my cordless phone? (Including DECT phones) What is the difference between a high capacity and a low capacity rechargeable battery? How do I charge my rechargeable batteries? What is ‘self-discharge’ of a rechargeable battery? What is the difference in voltage between rechargeable batteries and single-use batteries?Ĭan I use my rechargeable batteries straight from the pack? What is the difference between single-use (primary) and rechargeable batteries?Ĭan I use rechargeable batteries in devices that use single-use or alkaline batteries? ![]()
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