Now it may sound rather silly, but isn’t it about time you started paying more attention to your rechargeables? Recent surveys prove that by changing the smallest of daily electronic activity into more energy efficient models, it will not only save on electricity bills and reduce carbon footprints, but it can also help shift an eco-awareness into a more achievable outlook.
It is true that knowing how to maintain rechargeable batteries can help them last longer and perform more efficiently, but it may be even more valuable to see how even the smallest components of an everyday lifestyle can be understood and realigned to help achieve those more serious solutions. So to help mitigate the 15 billion batteries that are produced annually (only a minute fraction of which are actually recycled – not to mention the waste that goes into their global production and distribution) here are some ways in which you can make the best use of rechargeable batteries.
There are two main types of rechargeable batteries: lithium-ion and nickel metal hydride, both of which can be used to suit a variety of different applications.
Lithium Ion (Li-Ion)
One of the main advantages for using Li-Ion batteries is that they have the benefit of a higher density (energy/weight ratio) and higher voltage capacity than many other batteries. Intrinsic to the basic design of Lithium-ion batteries is the ability to recharge hundreds of times whilst being able to hold their charge for long periods when not in use.
A disadvantage of Li-ion batteries is that the complete component (batteries and charger) is typically more expensive than other rechargeable batteries – Li-ions also do not come in standard battery sizes (such as AA).
A good tip for taking better long-term care of a Li-ion battery is that, if you plan to store a Li-ion component, store it with a partial or full charge. And when possible, it is typically suggested, every month or so, that the batteries are put into use again – which will help refresh the energy cells.
Nickel Metal Hydride (NiMH)
The main advantage that users of a NiHM battery will find, is that they come in almost all standard sizes (like AA, AAA, 9 Volt, C, and D) which makes them a preferred substitute for conventional disposable batteries. These batteries are also known for providing longer lasting power than alkaline batteries.
But despite having a relatively fast self-charge rate, the Nickel Metal Hydride model can lose up to 40% of their charge in a month of storage. The higher the temperature, the faster the emitted self-discharge rate will be.
To help avoid the risk of permanent voltage depletion, do try to (on occasion) fully drain and recharge NiMH batteries. NiMH batteries can be stored in the freezer to help retain their charge – ensure that they are tightly sealed from moisture, and allow batteries to return to room temperature before using them.
These battery alternatives can be found at GreenBatteries.com along with other devices that can prolong battery life such as ‘smart chargers’.
Posted under Articles, How To's & Guides, Renewable Energy
This post was written by Ryan Whatley on August 15, 2008

