how to recondition batteries at home bonus

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NiCad (Nickel-Cadmium) batteries are common batteries which are used in many different applications. And learning how to recondition NiCad batteries is a worthwhile skill, because they are so common. From your average power tool to emergency lighting systems you’ll find that NiCad batteries are the top choice in battery due to their ability to provide powerful surges of current.

What is a NiCad Battery?

You will find NiCad batteries in all sizes from AAA to the large D type. And commonly in a series or circuit inside most tool power packs.  The problems with NiCad batteries is they are expensive and they suffer from a battery voltage depression “memory effect”. After many discharges and charges the NiCad battery will start to lose its voltage. Put simply this is due to poor charging habits. If you put a NiCad on charge before it has fully discharged its capacity you are at risk of causing voltage depression. This is because the NiCad remembers the shorter charge/discharge cycle and therefore its over capacity has decreased.You will find NiCad batteries in all sizes from AAA to the large D type. And commonly in a series or circuit inside most tool power packs.  The problems with NiCad batteries is they are expensive and they suffer from a battery voltage depression “memory effect”. After many discharges and charges the NiCad battery will start to lose its voltage. Put simply this is due to poor charging habits. If you put a NiCad on charge before it has fully discharged its capacity you are at risk of causing voltage depression. This is because the NiCad remembers the shorter charge/discharge cycle and therefore its over capacity has decreased.

The good news is you can fix this by rejuvenating the battery. NiMH and Lithium Ion batteries rarely suffer from voltage depression due to improvements in their design. So please read on to learn how to recondition NiCad Batteries.

How to Recondition NiCad Batteries: 

To recondition your NiCad batteries you are going to need a few tools:

  • Safety Glasses
  • Digital Multi Meter
  • 12v Trickle Battery Charger with 10/15amp setting.
  • 2 Long Nails
  • Good quality NiCad Battery Charger

For NiCad Drill battery pack repair you can have a look at our main battery reconditioning guides.

For this method we are going to give the NiCad battery a 12v shock then fully cycle it back into working condition. This will 9/10 solve the problem and allow you to fully charge the NiCad batteries again. Note: If you are attempting to recondition a NiCad battery pack then you will need to break down the pack or use a power pack capable of delivering 30v in short bursts to the entire battery pack.

Step One – Check Voltage And Shock Your NiCad Battery

Safety Warning! Make sure you are wearing your safety glasses/goggles for this step.

Take your Voltmeter and take a reading from the battery, Write down this reading for future reference. Now put on your safety glasses and switch on your car battery charger. Give yourself plenty of room to work and expect some sparks from the battery. Set the charger to the 10amp setting or 15amp. Then place a long nail in each clamp. Now you want to place the negative connector on the negative terminal of the battery, then quickly tap the positive connector on the positive terminal of the battery. Do not hold the connection in place otherwise the battery could explode.  You just want to quickly tap the positive terminal of the battery 5-10 times with your positive connector.

Turn off your 12v car battery charger and take another reading with your voltmeter. You should see an increase in the voltage reading now. If you don’t see any increase in voltage try to shock the battery a few more times.

Step Two –  Discharge and recharge cycle

how to recondition batteries at home bonus 🔴how to how to recondition batteries at home bonus for Next make sure you NiCad batteries are discharged (Don’t discharge NiCad’s too deep otherwise it may damage the battery). Place them back into the appliance and discharge. Then you are going to want to charge them using a decent quality NiCad charger for as long as needed. Its important that the NiCad batteries were fully discharged and then fully charge this should reset the memory effect and give you a long capacity again.




Step Three – Discharge the NiCad Battery and Freeze it

After you’ve gave your NiCad batteries a full charge and discharge, before you charge them again you are going to freeze them. Seal your NiCad batteries in a airtight zip bag and place them in the freezer. Leave them for at least 4 hours before taking them out again. Once you have taken the NiCad batteries out of the freezer its important that you give them time to thaw out. I recommend at least 6-8 hours at room temperature the 1 last update 2020/07/10 just to make sure they have fully thawed out.After you’ve gave your NiCad batteries a full charge and discharge, before you charge them again you are going to freeze them. Seal your NiCad batteries in a airtight zip bag and place them in the freezer. Leave them for at least 4 hours before taking them out again. Once you have taken the NiCad batteries out of the freezer its important that you give them time to thaw out. I recommend at least 6-8 hours at room temperature just to make sure they have fully thawed out.

Now place them back in the charger and give them a full charge again. After this you should see a significant increase in the batteries performance. And it should save you the cost of replacing them for a while longer.

Tips and Tricks to help keep your NiCad batteries heathy:

  • Get a smart NiCad Battery charger – These chargers aren’t so expensive and are superior to normal chargers for battery health.
  • Quick discharge NiCad batteries often – This will help prevent voltage depression and keep your capacity high
  • Keep store them away from sources of heat – The cooler the better for storing NiCad batteries.

how to recondition batteries at home bonus 🔥how to how to recondition batteries at home bonus for Following these tips should help keep your NiCad batteries in top shape. If you’re interested in more tips for NiCad batteries and even many other types of batteries I suggest you check out EZ Battery Reconditioning. Or check out our other battery reconditioning guides.

nicad-battery-recondition

Conclusion

So now you know how to recondition NiCad batteries. Remember battery reconditioning can sometimes be dangerous after all you are effectively playing with electricity. So please always take your time and make sure you have the right equipment to protect yourself. If you found this article useful and interesting please share it with your friends. And of course you can leave your comments and questions below and I will get back t you as soon as possible.

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  1. the 1 last update 2020/07/10 benjabenja April 24, 2018 for 1 last update 2020/07/10

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