If you have jumped on board the rechargeable battery bandwagon, you may have picked up one of the Tronic smart battery chargers from a Lidl store. The battery charger has a whole host of cool features and can even detect when a battery has a defect. Unfortunately, the charger seems to label a battery as defective for no good reason often rendering expensive batteries useless. Fortunately, there is a very simple fix.

If you are getting fed up of your Tronic battery charger show the flashing red light to show that there is a battery defect for a battery that seems brand new, you can actually fix them very easily. Some suggest using a cheap battery charger that does not detect defective batteries. However, you can very easily do it using the Tronic charger using this simple fix.

Fix Defective Battery With Tronic Charger

When you have a battery that is flashing red, the Tronic battery charger will refuse to recharge the battery. There is a super easy fix, however. The following steps or the video guide below will show you how to fix a defective battery that your Tronic battery charger is complaining about.

1. Place a healthy battery into one of the single battery charging locations in the middle of the charging area.
2. Once this battery has begun charging, take a defective battery and try to stack it on top of the battery that is currently charging.
3. Make sure that the positive and negative ends of the battery are touching the two charging nodes on the battery charger
4. Wait for 2 or 3 seconds before placing the defective battery into a normal charging port
5. The battery should begin to refresh for a few seconds before the charger starts charging it normally.
6. You have now repaired a defective battery in only a few seconds!

Why Does Tronic Charger Have Flashing Red Light for Battery?

So we know that the flashing red light turns on when the charger detects a battery defect, but why? What is actually defective about the battery and if it is so easy to fix this issue, why can’t the charger just fix it?

The issue is caused by a drop in voltage. A standard AA battery can be 1.2v to 1.5v. A charger may accept a certain fluctuation but if the battery drops too low, the smart chargers will think the battery is completely dead with no sign of recovery.

This can happen to batteries that run out of charge and are left inside an electronic device for several months unused. Any life in the battery will naturally fade away and as far as the charger is concerned, the battery is a dud. The reality is that the battery just needs a small jolt of power to bring it back to life. The hack in this video will show you exactly how to do it.