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21 Mar

Advantages and disadvantages of lithium thionyl chloride batteries

Li/SOCl2 batteries are manufactured in a wide variety of sizes and configurations. The capacity from 400mAh cylindrical charcoal and wound electrode structure batteries to 10000Ah square batteries and many others to meet special requirements. The Li/SOCl2 system originally has safety and voltage delay problems. The safety problem was particularly likely to occur at high rate discharge and over discharge. And the voltage delay occurs when the battery continues to be discharged at low temperature after storage at high temperature. Low [...]

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21 Mar

Lithium Manganese Dioxide Battery ( Li-MnO2)

Lithium Manganese Dioxide Battery ( Li-MnO2) : metal lithium is used as the anode and manganese dioxide used as the cathode. In the primary battery, the anode is the negative electrode, the electron flows from the negative electrode to the positive electrode, and the current flows from the positive electrode to the negative electrode. In the electrolytic cell, the anode is connected to the positive electrode, and the oxidation reaction occurs on the anode. The anion in the solution. Corresponds [...]

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12 Mar

Novel technology aims to improve lithium metal battery life, safety

Rechargeable lithium metal batteries with increased energy density, performance, and safety may be possible with a newly-developed, solid-electrolyte interphase (SEI), according to Penn State researchers. As the demand for higher-energy-density lithium metal batteries increases -- for electric vehicles, smartphones, and drones -- stability of the SEI has been a critical issue halting their advancement because a salt layer on the surface of the battery's lithium electrode insulates it and conducts lithium ions. "This layer is very important and is naturally formed [...]

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18 Sep

What Is A Supercapacitor?

A supercapacitor (SC) (also called a supercap, ultracapacitor or Goldcap) is a high-capacity capacitor with capacitance values much higher than other capacitors (but lower voltage limits) that bridge the gap between electrolytic capacitors and rechargeable batteries. They typically store 10 to 100 times more energy per unit volume or mass than electrolytic capacitors, can accept and deliver charge much faster than batteries, and tolerate many more charge and discharge cycles than rechargeable batteries. Super capacitors merged with batteries (hybrid battery) will become the new super battery. Just about everything that is now powered by [...]

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13 Dec

What is the shelf life of a NiMH battery?

You probably mean to ask: What is the self discharge rate of a NiMH battery?  The rate of self discharge for any battery depends on the temperature at which it's stored.  Stored at 70 degrees F (20 C) NiMH batteries will lose up to 40% of their charge within a month.  If they are stored at a higher temperature, they will self discharge at an even higher rate.  NiMH batteries stored at a lower temperature self discharge at a [...]

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13 Dec

What does mAh stand for?

mAh stands for milli Ampere hour or milli Amp hour.  It is a measure of a battery's energy storage capacity.  If you think of a battery as a small fuel storage tank, which in a sense it is, mAh a measure of how much "fuel" the battery holds.  (This is roughly comparable to using gallons to measure how much fuel a gas tank can hold.  The more gallons of capacity,  the more fuel the tank can hold.) With a [...]

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13 Dec

Do NiMH batteries have memory effect?

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.  To completely eliminate the possibility of NiMH batteries suffering any voltage depletion effect  manufacturers recommend an occasional, complete discharge of NiMH batteries followed by a full recharge. NiMH batteries can also be damaged by overcharge and improper storage (see the [...]

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13 Dec

Which are better, NiCd batteries or NiMH batteries?

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. (They should be recycled not discarded).  NiMH batteries usually have a higher capacity than NiCd batteries of the same size.  Some people argue that NiCd batteries deliver faster discharge rates than NiMH batteries.  While this may be true under certain circumstances, the difference is not relevant [...]

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23 Nov

Are batteries dangerous, how should I handle them correctly?

Batteries are only dangerous if handled incorrectly and proper maintenance is not followed. The hydrogen gas that batteries make when charging is very explosive. We have seen instances of batteries blowing up and drenching everything in sulphuric acid and sending jagged pieces of the poly propylene case up to 20 metres away. It only takes a small spark, flame or burning cigarette to set off a dangerous explosion. Therefore ignition sources must be kept well away at all times. [...]

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23 Nov

What is the difference between Lithium batteries and Lithium Ion batteries?

There are several important differences. The practical difference between Lithium batteries and Lithium-ion (Li-ion) batteries is that most Lithium batteries are not rechargeable but Li-ion batteries are rechargeable.  From a chemical standpoint Lithium batteries use lithium in its pure metallic form.  Li-ion batteries use lithium compounds which are much more stable than the elemental lithium used in lithium batteries. A lithium battery should never be recharged while lithium-ion batteries are designed to be recharged hundreds of times.

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