Reuse old laptop batteries for prolonged use of Car Toys (or any other device)

My kids got a new toy for birthday They were very disappointed with the performance of original battery 700mA which i suspect that is much lower. I decided to cheer them up by fixing their toy

Step 1: Creating the charger

Reuse old laptop batteries for prolonged use of Car Toys (or any other device)

I used old HTC charger 1Amp and old USB keyboard. I connected with the improvised connector with Black and Red wire. Since batteries are 4V i use 5 Volt standard charging (for mobile). Its very important to use 1Amp charger not less (since many cheap products mislead costumers).

Step 2: Parts

Reuse old laptop batteries for prolonged use of Car Toys (or any other device)
Reuse old laptop batteries for prolonged use of Car Toys (or any other device)
Reuse old laptop batteries for prolonged use of Car Toys (or any other device)

My fathers laptop battery died. I purchased new one but decided to see what in the old battery. When opened i saw an electronic chips (which probably regulates voltage input and output) with 6 batteries. Batteries where arranged in series of 3 series of 2 parallell batteries. In short every battery has 4 volts x 3 series to make an output of 12v ( or 11.8 ).

In picture you see 2 of 3 batteries pack extracted from the llaptop battery . Other battery is original one (700mA) .

Step 3: Result

Reuse old laptop batteries for prolonged use of Car Toys (or any other device)
Reuse old laptop batteries for prolonged use of Car Toys (or any other device)
Reuse old laptop batteries for prolonged use of Car Toys (or any other device)
Reuse old laptop batteries for prolonged use of Car Toys (or any other device)

Last and not least.. Laptop battery electronic chip protects battery from overcharging. Be carefull not to charge beyond their voltage. In my case, after disconnecting from charger i check the voltage of batteries with multimeter. If it is around 4.0V its OK.

I tested the car myself for an hour...The results are impresive. Even my kids don't have nerves to discharge the battery.

Lessons learned:

Never throw away llaptop batteries. They are very high quality and can be useful for anything

Step 4: Videos


 
 

Tag cloud

make build easy simple arduino making homemade solar laser printed portable cheap mini building custom cardboard wooden create super lego turn paracord chocolate your paper light intel