You should ignore these terminals if you are planning to charge your 18V battery using some hacks. There can be an additional 2-3 terminals usually used to communicate the state of charge, temperature, type of battery, etc. When charging this battery, make sure to connect your source’s positive terminal with this terminal.
The first terminal you should look for is the +VE (Positive) terminal. The ones most essential for us are the +Ve and -Ve terminals, as we only need these two to charge an 18V Lithium battery. 18V Battery TerminalsĪn 18V lithium-ion battery can have different types of terminals, as shown in the image below. The science behind charging an 18V or 20V Lithium-Ion battery is the same as charging any battery without a charger. Using a universal drill battery charger is another cheap and VERY-SAFE method of charging an 18V Lithium Drill Battery. The best way to charge an 18V Milwaukee Lithium battery is by using an old 18/20V laptop charger or a variable DC voltage adapter that can provide an 18V DC output.
#20v lithium battery how to#
How to Charge an 18V Lithium Battery Without a Charger?Ĭharge Milwaukee m18 Battery Without Charger However, I will recommend using the dedicated charger keeping the risks involved with handling fully charged batteries. I don’t know why you are not using a dedicated charger, maybe it’s not working, and you don’t want to spend on a new charger. But I guess it will be a cordless tool battery. I am unsure what type of 18V battery you have, so I will provide a generic method of charging any 18V Lithium battery. In the end, it’s the same battery.įor the sake of simplicity, I will call them 18V from now onwards in this article.
#20v lithium battery series#
Some companies will refer to a Five Cell Series pack 18V, and others will call it 20V for marketing gimmicks. So, the entire battery has a potential difference of 21.0 Volts when you charge it at 100%. 18/20V Lithium battery has five cells connected in series.Ī fully charged Lithium Ion Cell is 4.2 Volts. Before I start, let me explain if 18V and 20V Lithium batteries are the same.īoth 18V and 20V Lithium batteries are the same.Ī single Lithium Ion Cell is 3.7 Volts in its discharged state.
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