How to Charge A Motorcycle Battery Without A Charger?

Not all motorcyclists carry a battery charger with them on every trip. (On certain occasions, they might have even lost it somewhere). So what will be the right thing to do if the bike requires charging? 

Leave it there and expect someone else to travel a long way to bring you the charger? Purchase a new one? All these approaches would be a total waste of time and resources! Instead, our detailed guidelines will show you how to charge a motorcycle battery without a charger. 

Rest assured, these tricks will never do your bike any harm! Buckle your seatbelt and get started with us now.

How to Charge A Motorcycle Battery Without A Charger

So far, these three methods have been proven effective for most automobile models: using Push starter, plugging in a power bank, and jump starting the bike

Different cautions apply to each approach, so pay close attention to the guidelines below to keep unwanted consequences at bay.

1. Use Push Starter

How to Charge A Motorcycle Battery Without A Charger

Step 1. Make sure the road is big and clear enough for safe movements. Always keep an eye on upcoming vehicles to sidestep unfortunate accidents. You can count on knee pads or helmets if needed.

Step 2. Position your motorbike in second or first gear. Still, the latter might push the bike to move on its own accord and trip you over abruptly. Second gears, in our opinion, are still the safest bet.

Step 3. Grip the clutch and push the bike forward – preferably 5 to 10 mph. 

Waddling is the easiest method for bikers with long legs – you can ride the bike and push it forward with your feet simultaneously. 

But if supermodel-like legs are never your advantage, turn to traditional solutions then. Push beside the bike till you seize the proper speed to jump onto it. 

Seeking help from another person will make things even easier for you. And it would be fantastic if you happen to be on downward slopes; no power exertion is even required, since gravity can help you sustain enough momentum. 

Step 4. Once you have achieved enough speed, let the clutch go and press “Starter”. 

Give the bike some throttle. When the engine roars back, grasp the clutch once more to gain control. 

Step 5. Press down the clutch while revving the engine, which prevents it from dying again.

Keep riding while looking for any mechanic nearby. Professional services will lend you better insights into whatever issue your bike could be experiencing.

2. Jump Start the Bikex

Jump Start a Motorcycle

Approach 1. Jump Start The Motorcycle With A Car

Before you start, find someone who does not mind lending you their cars for several minutes during battery charging.

Step 1. Switch off that car engine.

Step 2. Pick up two red clips. Attach each to the car and motorbike’s batteries.

Step 3. Start your motorbike, then disconnect the clips (simply reverse the steps you used to connect them in the first place).

Approach 2. Jump Start The Motorbike With Another Motorbike

If you are on a motorcycle tour with another friend, this approach can get things done in a few minutes.

Step 1. Switch off both motorbikes, making sure they’re in a neutral state.

Step 2. Locatr battery terminals. Yank out two positive clips and attack each of those to the two bikes’ batteries. After that, join one negative clip to your motorcycle’s metal surface.

Step 3. Start the engine. Succeeded? Then let the engine run for a bit to ensure the batteries are well-functioned. Finally, disconnect the clips by reversing the order in Step 2.

Approach 3. Jump Start The Motorbike With Jump-Starter Packs

Forgot to bring a charger but had a jump-starter pack with you? Then it seems fortune still smiles on you. These packs will restart your dead bike in no time. 

Step 1. Ensure both the pack and the battery are off. Then connect a positive clip to your positive terminal and the negative one to the negative terminal. 

Find it a bit hard to clutch the terminals? Then you can link them to a chassis.

Step 2. Turn on the jump starter pack. Confirm that its voltage meets the expected level for your batteries. 

Now start the bike, and avoid cranking longer than 3 to 4 seconds at one go. Once the bike has started, detach the negative clips before doing the same with the positive. 

Step 3. Keep riding till you find a closeby mechanic for more thorough checking.


Before you attempt all the approaches described above, always make sure these criteria are properly met:

  • The fuel tank is not empty
  • The killer switches are not turned on
  • The spark plug is tight
  • Certain motorcycles have built-in safety features to avoid accidental engine start. Deactivate them first. 
  • The kickstand is on. 

Also, only turn to these methods if the situation calls for immediate recharge. When you are not in an emergency, it would be best to push the motorcycle to a nearby mechanic or wait for some help.

3. Use A Power Bank or Power Supply

These approaches demand certain technical knowledge and pose quite a risk. We would never suggest such solutions unless you have proper safety gear such as eye goggles and gloves.

Also, never charge the battery more than one-tenth at a time. Let’s say your automobile battery is 20-amp; then you must charge it over 10 hours (two amp per hour). Breaking it down into smaller periods can keep severe overcharging issues at bay. 

From our research, it seems this method only works best with lithium-based and lead batteries. The next sections will delve further into detailed solutions for each.

Approach 1. For Lead Batteries

Always inspect your fluid levels first. Are there any low cells? Then use distilled water to fill them up. Also, loosen the vent caps and keep your working area well-ventilated. Otherwise, oxygen and hydrogen may build up in your batteries, leading to hazardous engine problems.

Step 1. Adjust the settings to the current-voltage limit expected for the battery (usually 15 to 30% of the rated capacity). Let’s say you have a battery of 10 Ah; then it must be charged at 3A.

Step 2. Inspect the batteries and note down some of these indicators:

  • Temperature. Is the power bank getting heated during your charging process? Then stop immediately. Wait a few minutes till it cools down before you resume.
  • Swelling. Stop whatever you are doing if there are signals of swelling in your charger. Either you have been doing things wrong, or the power bank is suffering from other issues. Replace it with another one. 
  • Smoke. Smoke is a huge red flag. Quit charging immediately. 

Step 3. Disconnect the bike from the power banks when your batteries are fully charged.

Approach 2. For Lithium-Ion Batteries

The steps are comparable to those of lead-acid batteries, though more caution is required; we cannot stress enough that you must ensure no cells exceed the voltage limit.

How can you know whether it’s fully charged or not? The most transparent signal is to measure the volt quantity per cell. If this number reaches 4.20 volts and cannot stoop down lower, that means the currents have already bottomed out. Plug the power bank off your motorcycle.

 Frequently Asked Questions

1. How Long Does It Usually Take to Recharge A Bike?

Do you know that there are thousands of automobile models and battery cells available? 

As a result, narrowing the number to a limited scope is not an easy task. One might take only 4 hours, while others can charge up to 24 hours or even exceed a day. 

Not to mention, other types of relevant variables may either lessen or extend the period required. For instance, brand-new batteries take faster to refill than those undergoing years-long usage. The charger or power bank qualities also play a critical role here.

We suggest you consult the manufacturer for confirmation. Should the actual charging period last much longer than the brand’s instructions, at least you will know it’s time to bring the vehicle to a repair shop.

2. When Is It Okay for Me to Jumpstart My Bike Using A Car?

Since cars give off greater power than motorbikes, most people tend to steer away from this method for fear of shocking their motorbikes. But in fact, given the proper operation, your dead battery can restore with ease! 

All in all, it would be best to find a car with a similar volt system. Suppose your bike’s voltage is 12; then the car’s should preferably be around this number, too. 

But what if the car’s voltage outperforms that of your motorbike? The great news is that this approach is still practical at the end of the day, except you will need to charge at a much slower speed. Refer to our guides above for more support.


This article has offered helpful pointers on how to charge a motorcycle battery without a charger. Numerous techniques are available, so assess your automobile condition with great care to pick one that suits your demands best! Feel free to reach out if certain aspects still confuse you.

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