How To Charge Electric Scooter Without Charger

How To Charge Electric Scooter Without Charger

E-scooters run on batteries, and you have to charge them when they discharge. It’s super easy to charge an e-scooter with a charger because most scooters come with a manual. However, they do not include how you can charge without the charger but advise you to purchase one from the manufacturer. 

If your charger broke down or got lost, imagine what you’d do. Would you walk down the distance you used to scoot? Not really! To your surprise, you can improvise a faster charger than the original and work just as fine.

I’ve included a special daily technique you can employ. It’s even easier to charge your minibike without a charger.

electric scooter is near to the building

Are these methods safe for daily use?

Although safe, use them as alternatives only when you have no other option. Frequent and long charging can harm your battery. The two key points to note are the voltage and current set to charge your battery.

Since there are different battery types, let’s dive into a brief overview of each of them.

Lead Acid Batteries 

You should note the required voltage of the scooter’s battery which depends mostly on the number of cells. When connecting the battery to the power source, set the voltage and current to the recommendations indicated by the battery.

Most lead batteries have 6 cells each with 2 volts. Therefore, you’re required to set the total charging voltage at 12 volts.

The charging current can be preferably as low as between 10 to 30 percent from the indicated limit. For example, a 60Ah battery can be charged at a current of about (10% to 30% = 6 – 18A). 

Always keep the battery in sight. As the procedure doesn’t come with a fitted timer that disconnects a battery after fully charging, it is recommended to connect the voltmeter and the ohmmeter throughout the charging period.

It’s also advisable to measure the battery temperature in case of anything. 

When the battery has fully charged (the voltage reads between 13.7 to 13.9 and the current is 3 percent lower than the charging current), disconnect the charger.

Sometimes, the battery back charges at first, but soon recuperates and starts charging. Well, in that case, set the voltage to slightly above the required voltage (around 14) if you want to recharge faster. 

Lithium Scooter Battery

The charging process is similar to lead-acid batteries. You only need to note lithium batteries have less voltage, hence need to be charged according to their requirements. 

Lithium batteries contain cells each with 4.20V. It’s your responsibility to determine the number of cells. Set the current and voltage to that indicated on your battery. Charging voltage should equal the total voltage of the cells.

As aforementioned, a charged lithium battery will read 4.20V and its current will be about 3 percent below the estimated current. When all that falls in place, disconnect the charger.

electric scooter is stand on the road

NiCd and NiMH Battery

Here, you need to be eagle-eyed should you notice anything as you watch the battery temperature. The tricky part is using an adjustable power feeding source. It’s hard to measure the full charge because the voltage keeps varying due to the charging current.

Always focus on estimating the full charge and the temperature variation. A 750 to 1000mA battery takes about 3 hours to fully charge when charged at 2Ah. For the temperatures, a quick rise from 0.3 to 1C is an indication of a full charge.

You can measure the battery voltage to confirm whether it’s full or not. Repeat the process until it’s full.

How to charge Scooter Battery Without A Charger

Here, I’m going to teach you how to improvise a charger at home. To start with you’ll need:

  • Deionized water or electrolyte
  • Aluminum or copper cables 
  • Voltmeter
  • Hydrometer

If you have all these, you don’t have to worry about anything undesirable that might happen.

Let’s get into the process:

  1. Wear your gloves and goggles and take out the battery from the scooter.
  2. Find a cool and dry place, then place your battery
  3. Remove the chambers
  4. Add electrolyte to the chambers. Leave some space for air bubbles that will emanate during charging
  5. Arrange your cables both the negative and positive connecting the battery terminals to the charging source
  6. Occasionally check the charge with a voltmeter (a full battery reads between 13.7 – 13.9 volts)
electric feeling station in this picture

Charging The Battery With A Portable Car Jumper

Since portable car jumpers have bigger batteries, the charge will push into the empty scooter battery. It will not take longer than 3 hours till it is full. Charges always move from a higher concentration to a lower concentration.

These are the simple steps:

  1. Connect the battery terminals to the car jumpers’ correctly.
  2. Switch on the jumper and leave to charge for about 20 minutes.
  3. The battery may be warm, and that’s a sign it is charging. 
  4. Modern car jumpers will intelligently stop charging when batteries are full.
  5. Disconnect your battery. 

How To Charge A Segway Without The Charger

The easiest way is to remove the battery from the segway and follow any of the above steps.

Good luck with your homemade recharging process. If you have any questions, please leave me a message below.

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