![]() ![]() The charging starts as soon as the potential difference rises. Once the voltage goes up to 20 V, it starts charging. I have applied 20V because the battery we are charging is also rated at 20V. However, once the voltage source is switched to 20.0V, it charges. In the first setup on the left, the voltage source is 0V, so the craftsman battery is not charging yet. The battery terminals will show 20.5V when fully charged battery.īelow is a schematic of a 20V Lithium-ion Craftsman battery charging. Note: The Actual Voltage of a 20V Craftsman Battery is 18.5 Volts. The basic science of charging a 20V craftsman battery is to provide the 20V DC voltage at both terminals by connecting the voltage source’s positive terminal with the craftsman battery’s positive terminal and the voltage source’s negative terminal with the negative terminal of the craftsman battery. When charging this battery, make sure to connect your source’s negative terminal with this terminal. The fourth terminal from the left is the -VE (Negative) terminal. This terminal transmits Craftsman’s proprietary code via its authentication IC which the charger and tool understand. This indicates the battery’s type, capacity, voltage, etc., to the charger and tool. Similarly, the charging will stop if the battery gets too hot. A craftsman tool will stop working if the battery gets too hot or too cold. It is a thermistor for temperature measurement. The second terminal from the left is NTC. ![]() When you will be charging this battery, make sure to connect your source’s positive terminal with this terminal. The first terminal from the left is the +VE (Positive) terminal. Craftsman 20V Battery Terminals Ī 20V lithium-ion Craftsman battery has four terminals, as shown in the image below. You can NOT balance charger a Craftsman 20V Lithium Ion Battery. The science behind charging a craftsman 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 a 20V Craftsman Drill Battery. The best way to charge a 20V Craftsman battery is by using an old 18/20V laptop charger or a variable DC voltage adapter that can provide a 20V DC output. Charge Milwaukee m18 Battery Without Charger ![]()
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