How to Charge a Drill Battery without Charger See the Helpfull Guide

Many individuals keep a battery charger linked to their drill battery for emergencies. The problem arises, though, if you’re in desperate need of a charger and the power goes out. In-depth instructions on how to charge a drill battery without a charger are provided in this guide.!!

You’ve got a never-ending to-do list if you’re anything like me. Things that must be fixed around your house include the broken lamp in your living room and the busted-open door to your kid’s bedroom. Every repair task requires drilling, and you’ll need the ability to charge the batteries of a craftsman drill for that purpose. This tutorial will show you how to charge a craftsman drill battery for the sake of simplicity. How does one recharge the battery of a craftsman drill?

First, check if your Craftsman drill battery is compatible with your charger. Then, to complete the process, plug the battery into the charger. Once the battery is completely full, reconnect the charger to an active power source.

Types of Batteries 

Nickel Metal Hydride Batteries

One of the most common types of batteries used in power drills is a nickel metal hydride (NiMH) battery, which you can buy recently. There is a lot of Titanium and Nickel in NiMh batteries, as well as a few other alloys and electrodes composed of NiOOH.

Nickel Metal Hydride Batteries

NiMH batteries typically include an intermetallic complex including metal M. In the first stages of NiMh battery development, many intermetallic compounds were produced and tested.

One of the major downsides of NiMH batteries is their susceptibility to memory effect and voltage depression. When the battery isn’t completely depleted, these results occur.

Other battery types used in cordless drills include nickel-cadmium batteries. A combination of cadmium and nickel oxide hydroxide serves as the electrodes in NiCd batteries. The nickel-cadmium battery, or NiCd battery, was first developed in 1899 and quickly became well-known in the late 1990s.

They can operate for a longer period of time at lower temperatures than conventional rechargeable batteries.

They have a distinct benefit in applications that require high discharge rates but still need to deliver at total capacity. You may also use them when you need to maintain a deep discharge for an extended period of time.

Battery Made of Nickel-Cadmium

Despite this, NiCd batteries are notorious for self-discharge at an alarming pace. However, it is slower than more conventional batteries. The price of NiCd batteries is also rather expensive (but cheaper than Lithium-ion batteries). You can get one on

Similar to NiMh batteries, NiCd batteries may have memory effects. On the other hand, they come in handy when a deep drain is necessary for an extended duration.

These NiCd batteries are ideal for high-power applications because of their low internal resistance, which allows them to produce strong surge currents. In addition, cordless power tools and remote-controlled devices can benefit from these batteries because of their high capacity (RC planes and Cars).

Batteries with Lithium Ion Cells

Rechargeable lithium-ion batteries are the other type seen in cordless power tools. During the production of positive electrodes, chemicals containing lithium are implemented in an interpenetrating fashion. Consequently, the negative electrode is constructed from solid graphite bars.

Batteries with Lithium Ion Cells

Although nickel-cadmium and nickel metallic hydride batteries exhibit memory effects, lithium-ion batteries lack these. As far as drill bits go, they’re the best because of their low self-discharge capacity and high energy density. Using Amazon, you may purchase a lithium-ion battery for your drill.

Despite this, lithium-ion batteries might be hazardous to your health. This is because lithium-ion batteries are highly volatile and can explode anytime.

How to Charge A Drill Battery

The battery pack of a cordless electric drill is the most critical component. To get the maximum performance out of each charge, you’ll need to learn how to charge your battery pack correctly. However, you may get these benefits by following a few simple charging rules.

Before utilizing your new cordless drill battery, allow it to sit for at least 18 hours.

Use it to its fullest capacity between charges to get the most out of your battery. NiCd (Nickel Cadmium) and NiMH (Nickel Metal Hydride) cells, which make up the vast majority of drill battery packs, work well when recharged using this manner, as opposed to a sealed lead-acid battery found in automobiles. To put it another way, as a general rule of thumb, you should continually deplete and recharge your battery to zero.

Never charge a NiCd battery pack for longer than 30 hours at a time. Short bursts of usage followed by “quick” charging will shorten the battery life. For NiCd batteries, it’s crucial to use the total discharge and charge technique.

It is essential to completely drain the battery pack before putting it away. Always keep the device in a moderately temperate and dry environment to ensure optimal performance during recharging.

How to Charge A Drill Battery Without a Charger 

Let’s get to the fun now: how to charge any rechargeable battery at home without the official charger if you don’t have a balance charger or variable voltage source.

Usually, we don’t keep a source of changeable voltage on hand. Unfortunately, obtaining these voltage sources is extremely difficult and expensive. As a result, we’ll have to devise some workaround to revive our depleted battery.

Battery life can be significantly increased by using a high-quality charger for newer batteries. There are plenty of replacement chargers for sale on Amazon. In order to determine the exact drill and voltage you need, you can utilize this website.

Let’s go right to the subject now. All you need is the same voltage as your battery, which we’ve already discussed.

There are several techniques to achieve the voltage you need:

Perfect 12-volt voltage source: your car’s battery

Charger for Laptops – 12V to 18-19V Voltage

A few AA batteries are able to create whatever voltage you need.

Voltage Converters and Regulators at a Discount

One More Drill Battery

An array powered by a solar panel.

Use the car’s battery to power a cordless drill.

One of the better options is using a car battery to recharge a 12V cordless drill battery. Then, while driving, the automobile’s alternator will charge the battery for you. When my car’s battery dies and I have to get a new one, this is the one I always turn to. Their warranty period lasts for 36 months.

There is only one thing you must do: connect the drill and automobile batteries. Remember to click the positive terminal of the car battery with your charging battery and the negative terminal of your car battery with your discharging battery, as previously indicated.

If you already have the same car battery at home for another use, like a UPS, then you may use it in your vehicle as well. Your automobile battery should also have a rated voltage of 12V, so make sure the batteries you intend to charge are both 12V.

Using a Laptop Charger to Recharge a Cordless Drill’s Battery

For charging an 18V battery, most laptop chargers have an output rating of 18-20V. The steps are straightforward. Make sure you know what kind of charging connector your laptop has.

After that, locate a compatible female connector (Get these connectors). Then, with a soldering iron, attach the female connector to the battery’s internal connections (Positive with positive and negative with negative). Finally, make a hole in your battery for the female connector, and you’ll be able to use that instead of the supplied charger.

This two-pin connection eliminates the need to choose the proper connector type. You may connect your electrical devices’ positive and negative terminals in the same way.

The old Megsafe Apple Macbook chargers have a voltage rating of 14/16/18/20V. The 18-20 volt chargers can readily recharge an 18V battery. Make sure to check the charger’s output voltage rating on the back.

Linking the positive terminal of the laptop charger to the battery you’re charging and the negative terminal of the laptop charger to the negative terminal is all it takes.

Because removing the connection from the Magsafe charger’s pins is difficult and obtaining the female pin socket for it is nearly impossible, you will have to shorten the Magsafe connector.

It is important to keep in mind that the central positive wire will be directly correlated to the negative mesh. Beware: Using a faulty MagSafe charger might result in irreparable harm.

Charging a battery with 1.5V AA cells from a convenience store

A costly and ineffective method, yet one that can save a life. If there is no other way to power the device, 1.5V (AA) batteries might serve as a temporary solution (A voltage equivalent to the battery you are going to charge).

For a 12V battery, nine cells in series produce 13.5V, while 13 cells in series produce 19.5V. It’s possible that these cells may not be able to recharge your battery completely because of their tiny capacity

Getting rechargeable AA batteries is also possible, but that will cost you a lot. Still, I think it’s worthwhile to share.

Using inexpensive voltage adapters to charge a battery

A voltage regulator, which is comparable to laptop chargers in price, is widely available at electrical shops and online. Amazon has a fantastic selection of 12V and 18V converters, which will work perfectly. This argument held a lot of weight for me. The many provided connectors simplify battery hookups.

Some of these may already be in your homes, such as Bluetooth speakers or mini fans that came with them. Make a comprehensive lookup of the area.

The drill’s battery is being put to good use as a charger for another drill’s battery.

Recharging a drained battery with a fully charged battery is also an excellent trick. It is possible to utilize a functional charger for a different type of battery to charge yours if you have one available.

The same is true in science as it always has been. Make that the second battery has the same voltage by inspecting and charging it. To complete the circuit, re-establish the polarity of the terminals. Positives tend to attract other positives, whereas negatives tend to attract other negatives. Jump wires will be necessary for the connections. As a temporary measure, it may prove useful in the event of a crisis.

using a solar panel to charge a battery

Solar Panels are an excellent source of DC Voltage Supply. The scheme, however, has a hiccup. Due to changes in the sun’s path and temperature, the output voltage is not stable.

The solar panel’s regulator reduces this voltage to 13-15 volts before it can charge the 12V battery.

Assuming the panel is compatible with 12V batteries, an MTTB controller isn’t necessary to hook it up to your pack. The battery should not overheat to avoid any accidents. I’ll take care of it.

Are Drill Battery Chargers Compatible with Car Chargers?

You may use a cigarette lighter charger to recharge a drill battery. Many professionals and do-it-yourselfers will be happy to hear that, especially those who cannot use a regular charger for whatever reason.

A vehicle charger may not seem like a big deal at first. However, as a result, a car charger’s value to some may be unclear.

When faced with a circumstance like this, having the ability to charge your drill batteries while on the fly can be a game changer.

When your batteries run out when you’re driving to the job site.

On a construction site where there is no electricity or outlets for your tools, this can be an issue.

You can’t use it if it’s broken or absent.

When you want to be sure you don’t forget to recharge your batteries later by doing so on the way home.

However, there are many more circumstances where using a car charger might make your life easier. However, the four instances given above are sufficient to demonstrate that, yes, a car charger may be used to recharge a drill battery.

How to charge Drill with a Car Battery 

Let’s say you want to be able to recharge your drill battery using a car charger. The procedure is simple, and it seems as follows:

A Car Charger Is Required

Ensure you have an adapter for the same brand of batteries as your drills.

Many well-known manufacturers now provide their line of branded automobile battery chargers. By acquiring an original charger from the same brand, you may check that the charger is compatible with your drill batteries.

Generally speaking, the car charger is identical to the wall charger used at home. The only different thing is the plug that’s plugged into it.

Plugs on car chargers connect to the power socket in your vehicle (i.e., the cigarette lighter socket). This implies the devices can only be used in your automobile and not at home.

You’re ready to go as soon as you find a car charger at your neighborhood hardware store or order one online.

Plugging In The Charger.

Connect the charger straight to the electrical outlet in your vehicle once you’ve received it.

‘Directly’ is the essential word here. To power many items simultaneously, some motorists utilize adapters that divide their car’s single electrical plug into two or three additional outlets.

It’s convenient, but you won’t be able to charge your drill battery properly if you do that! As a result, your charger may be unable to acquire the power it requires due to competition from other electronic devices.

The charger should be plugged directly into the car’s cigarette lighter socket rather than through an adapter to receive the maximum power.

Plug In The Power Source

The battery must be plugged in while the charger is plugged in. Most people will come to the same conclusion by now: using this charger is just like using a regular one plugs into the wall.

The only differences are using the correct charger and ensuring that it is not sharing its power source.

Start the vehicle, 

Most cars have a power socket that works even when the engine is off. The socket will be powered by your car’s battery, which is located underneath your vehicle’s hood.

If that’s the case, you can connect your drill battery and charger to the socket and leave it to do its thing while you go about your day. You don’t need to worry about overcharging because such chargers are designed to cut off automatically when the battery is full.

Still, draining your car’s battery while the engine is off is never a good idea. Because of the risk of starting your automobile with a dead battery, you should avoid this.

In other words, if you use a car charger to recharge your drill battery, be sure the engine is running first. The alternator, responsible for restoring your vehicle’s battery when the engine is running, means you don’t have to go behind the wheel.

There is no need to worry about destroying your car’s battery while charging your drill battery.

How Do You Calculate a Battery’s Charging Time?

The time required to fully charge a battery is calculated by dividing its capacity (in Ah) by the charger’s current (in A). An individual’s time frame can be affected by various factors like the weather and the battery’s state of health. Fast or rapid chargers allow charging in a shorter period.

The amount of time it takes for the battery to fully charge is critical to its longevity.. So charge the battery as quickly as possible to maximize your productivity. For an ideal battery, we can figure out how long it takes to charge using this formula: The battery won’t charge appropriately because of environmental and other issues.

Battery Capacity / Charging Current = Charging Time (Hr) (A)

Battery Capacity (KWh) / Charging Power (KW) = Charging Time (Hr)


Can you charge drill batteries?

Make sure the tool’s battery charger works by inserting a dead battery into the charger. Disconnect the battery and let it charge for at least an hour before replacing it.. Then, attempt the jumpstarting process once more, but this time leave it linked to the auto charger for 10 to 12 seconds to see if it works.

How do I know when my drill battery is charged?

Make that the multimeter’s voltage indication is working correctly. Fully charged batteries should have a voltage reading of one volt more significant than the battery’s stated value. An 18-volt battery should be tested at least 19 volts, as an illustration.


To sum up, we hope you never find yourself in a position where your drill malfunctions in the middle of a project. In the event that you don’t have a cable to charge your drill, this guide will explain how to do it.

To be safe, you should utilize the methods described above with extreme caution and implement all necessary safety precautions. Using the car’s battery to recharge your drill battery is the best and most convenient option.

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