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There are a lot of different types of batteries in the world. But only a few types are suitable for airsoft electronic guns (AEG). That is because airsoft draws fairly high peak current due to the strong spring. The stronger the spring, the more current it draws. In this article, we will discuss the different types of batteries that are suitable for airsoft use.
Nickle-cadium (NiCd) is the oldest rechargeable battery type. It has the ability to provide high current output. But its energy density is not as great as the other types of airsoft batteries. Due to its high current output, NiCd batteries are also used in cordless power tools and other high power hobbies. It has a high self-discharge rate, so it is useful the instant you charge it, but not good for long shelf applications like emergency gadgets. Luckily, NiCd batteries can handle high current charging. Therefore a speed charger can quickly charge a NiCd battery pack in 15 minutes. Its charging characteric is quite tolerant with very little hazard (especially when trickle charged).
When computing gadgets came about, the NiCd energy density is too low to drive consumer electronic devices for long. Therefore, the industry invented NiMH rechargeable batteries. This type of battery has twice the energy density of NiCd battery cells. And its self-discharge a lot slower than NiCd batteries. The catch is they they provide lower max current output than NiCd batteries. In addition, their maximum charging current is about half of the current that NiCd can provide. Combined with doubling the energy capacity compared to NiCd, a speed charger will charge a NiMH battery in approximately 1 hour. NiMH has slightly lower charging tolerance than NiCd, therefore a smart charger should be used with NiMH batteries.
(LiPO) rechargeable batteries are relative recent innovations that have made its way into airsoft. It has the highest energy density of all airsoft batteries. It has almost twice the max current output when compared to NiMH, surpassing NiCd's max current output as well. LiPO also comes in higher voltage without needing to increase its packaging by much, a drawback that has plagued NiCd and NiMH batteries.
LiPO batteries is originally invented for computer laptops where consumer demand for smaller and smaller size requires the battery to be in arbitrary fitting shape. Therefore, airsoft LiPO battery comes in assorted sizes to fit all sorts of airsoft guns.
The drawback to LiPO batteries its charging tolerance is low. Combined with a potential to catch fire when overcharged and over discharged, safety precautions have to be taken when using a LiPO battery. A balance charge that automatically shuts of is almost necessary. A fireproof charging bag is absolute necessary. An audible discharge monitor is also necessary.
(LiFePO or LiFe) is the newest rechargeable battery type. It has all of the characteristics of LiPO batteries, except for the fire hazard risk. Charging and discharging requires the same tender loving care. But when you do overcharge or over discharge, you only damage the battery and won't cause it to burn. Therefore, to keep LiFePO batteries in healthy condition, you will still need a balance charger and a discharge monitor.
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