Husqvarna 36V Chainsaw Battery Charger:
The following are some facts about lithium ion batteries:
Lithium ion batteries have a very high energy density (energy per unit volume) compared with other types of batteries. They have many advantages over lead acid or alkaline cells such as their long cycle life, low self discharge rate, good thermal management and low internal resistance.
They are rechargeable. A battery’s capacity depletes when it is not used.
When the battery is fully charged, its capacity will be nearly equal to what was stored when it was discharged. If you do not use your battery for a while, then it loses most of its charge and becomes useless until you re-charge it again.
Lithium ion batteries can last up to 10 years before they need replacing due to damage from mishandling or improper storage conditions.
Lithium ion batteries can be recharged several times without losing any of their capacity. However, if the battery is not charged enough, it may become damaged and unable to operate properly.
Recharging a battery beyond its normal operating range could cause irreversible damage to the cell or even explosion.
When charging a lithium ion battery, make sure that there is no metal objects near the charger during charging; otherwise, the voltage could drop too much and damage the battery. Also, the charger should use a constant current and constant voltage charging system to prevent the battery from overheating or exploding.
When you first buy a lithium ion battery, you should discharge it completely before using it for the first time since there is a possibility that it may not work properly if you don’t.
You should store your battery in a cool place at room temperature and avoid charging it for long periods of time because this could affect its overall lifespan.
Do not leave a charging lithium ion battery unattended since it can catch on fire or explode if compromised.
When carrying a lithium ion battery, you should carry it like how you would carry a glass bottle. Be very careful when transporting it in case the battery inside breaks and leaks all over your clothing, which could potentially result in an electrical burn.
What are the Key Components of a battery?
A battery has three major components: a positive and negative electrode, and an electrolyte solution. The positive electrode is called the cathode while the negative electrode is called the anode. When you charge the battery, a chemical reaction occurs that results in a transfer of electrons from one terminal to another. When you use the battery, a reverse reaction takes place.
Lithium Ion Batteries: How Do They Work?
These batteries are very similar to lithium metal batteries, except they feature a composite cathode that includes transition metals such as iron or manganese. The most common cathode material for lithium-ion batteries is lithium cobalt oxide. In this type of battery, electrons move through the outside shell of the cathode.
When you charge it, lithium ions travel through an electrolyte solution to react with the cathode. The resulting flow of electrons completes the circuit and powers your device.
When you use these batteries, the process is reversed. This reaction releases energy and the movement of the ions depletes the electrolyte. This cycle continues until the battery can no longer hold a charge.
The electrolyte can be a solid or a liquid. In most lithium-ion batteries on the market, the electrolyte is a lithium salt in an organic solvent, but it can also be a polymer membrane with the salt dissolved in it.
The anode and cathode can be made of different materials, as long as they don’t react with each other or the electrolyte solution.
As time goes on, the battery loses its ability to accept a charge. This is due to the formation of complex compounds called ‘lithium plating’ that build up on the anode.
Lithium cobalt oxide batteries (used in most electronics and power tools) can be recharged many hundreds of times before losing their capacity. These batteries have a lower energy density than other types of rechargeable battery, such as nickel metal hydride.
However, they also have a lower risk of a short-circuit or fire.
Lithium Iron Phosphate Batteries
These batteries are similar to the lithium ion battery, except they feature a phosphate based cathode rather than cobalt oxide. This makes them safer and more environmentally friendly since they don’t require lithium metal oxide for the anode (which is extremely flammable).
These batteries are cheaper than lithium cobalt oxide because they can be charged and discharged more than 2,000 times.
These batteries are used in power tools, wheelchairs, and uninterruptible power supplies (UPS). In laptops and smartphones, these batteries are often combined with a transition metal oxide to increase their energy capacity and lifespan.
Sources & references used in this article:
- Life cycle assessment of chainsaws. A case study of two Husqvarna products with different power systems. (AR Kristinsdóttir, DFP Corredor – 2011 – publications.lib.chalmers.se)
- Battery Pack-Operated Hand-Held Power Tool (H Rosskamp, H Mang, M Müller, V Reber… – US Patent App. 12 …, 2010 – Google Patents)
- Battery powered tool and battery pack for a battery powered tool (P Martinsson, J Bjornlinger, O Bergquist… – US Patent …, 2015 – Google Patents)
- Battery Driven Electric Tool (O Bergquist, J Björnlinger… – US Patent App. 13/582,285, 2012 – Google Patents)
- Battery powered tool (P Martinsson, J Björnlinger, O Bergquist – US Patent 10,105,832, 2018 – Google Patents)
- Electric power tool with battery pack (H Roβkamp, H Mang, M Müller, V Reber… – US Patent …, 2014 – Google Patents)
- Battery pack for driving electric motor of compact engine starting device, engine starting device driven by the battery pack, and manual working machine having the … (S Miyashita, R Ono, T Oniwa, H Hokari – US Patent 7,525,287, 2009 – Google Patents)