Makita Battery Repair
- Step 1: Why Batteries Fail. As with many types of cell chemistry, once the voltage of lithium cells falls below a...
- Step 2: Dismantling & Testing. Makita batteries are usually held together with a set of four T10H screws. Due to the...
- Step 3: Soldering New Tabs. After re-wrapping any cells with slight amounts of surface corrosion from other cells...
Full Answer
What battery does Makita use?
Makita seem to use the Sony Konion LiMn cells and these are available online for between fire and ten pounds each or you can frequently pick up failed batteries on ebay and cannibalise these for parts. If you do need to replace cells spot welding to the cells is the best way to go, as if you solder you risk overheating.
How to remove the battery cover?
I have found that the easiest way to remove it is to drive in a small wood screw and pull it out with a pair of pliers. Once you have the battery open being careful that the retaining clip spring does not fly away or short out the control board you should be able to see if there are any obvious major issues.
How to tell if the battery is damaged?
Also the plastic at the side of the release button has bubbled. It is showing 7.99v across the whole battery which is way to low and 0.04v, 0v, 3.96v, 0.04v and 3.97v across each of the cell pairs respectively. Upon opening up the battery there is obvious damage to the second pair of cells.
How do I bring my Makita battery back to life?
0:402:42Makita How to Save Dead battery bring back to life revive/ rejuvenateYouTubeStart of suggested clipEnd of suggested clipAnd we'll tap this for about five to seven seconds and it'll be a quick tapping and i'm gonna doMoreAnd we'll tap this for about five to seven seconds and it'll be a quick tapping and i'm gonna do that right now you should have safety glasses on while you do this.
Can Makita batteries be rebuilt?
Our trained technicians work on Makita® brand batteries each day and have been working with many Makita® service centers for years. We rebuild all types of Makita® brand batteries including those used in diagnostic equipment. Don't wait any longer. Send your 1820 battery pack to us for repair today!
Why do Makita batteries stop working?
There seems to be two main causes as to why your Makita 18v batteries die. The first is overheating which is due to several reasons. The second main cause is that the first two cells fail due to them being used to power the circuity of the battery management chip.
Why does my Makita battery flashing red and green?
If the battery lights begin to flash red, the battery is too hot to charge. The unit will turn on cooling fans and the battery will begin charging once it gets to approximately 70 degress Farenheit. If the charging lights blink red then green, the battery cartridge can not be charged.
How do you rebuild a power tool battery?
4:1910:54Cordless Drill Battery Pack Rebuild for $20 or Repair for $0 - YouTubeYouTubeStart of suggested clipEnd of suggested clipGot it all soldered both sides. And you can test my voltage on our two terminals. Actually negativeMoreGot it all soldered both sides. And you can test my voltage on our two terminals. Actually negative my multimeter is a little off it's missing it missing. A little LCD spot so 16.1.
How do you restore a 18V rechargeable battery?
1:003:24How to revive a dead rechargeable power tool battery easily - YouTubeYouTubeStart of suggested clipEnd of suggested clipBut you can give it a bit of a boost or I'm just using a pair of scissors here. And I'm just goingMoreBut you can give it a bit of a boost or I'm just using a pair of scissors here. And I'm just going positive terminal positive terminal.
How do you fix an 18v battery that won't charge?
0:333:07How To Fix A Cordless Drill Battery That Won't Charge - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo once you get these to where each one is touching. The positive the positive negative to negativeMoreSo once you get these to where each one is touching. The positive the positive negative to negative just let it sit for five minutes.
How do you fix a lithium-ion battery that won't charge?
1:275:45How to fix a lithium ion battery that won't charge - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo that's the first thing you'd want to try is use some sandpaper. Use a shim use something to cleanMoreSo that's the first thing you'd want to try is use some sandpaper. Use a shim use something to clean the contacts.
How do I test my Makita battery?
Genuine Makita batteries are black in color, have the Makita trademark logo with Lithium-Ion identification on both sides, and have the Makita trademark logo on the bottom of the battery. "Knock-off" batteries may appear to be similar to genuine Makita batteries but have no Makita branding on them.
What do the red lights mean on a Makita battery?
Solid red light – Charging (Battery is below 80% charge) Solid red and green light – Charging (Battery is above 80% charge) Solid green light - Charging complete. Flashing red light - Delay in charging (Battery is cooling or the battery is too cold to charge) Flashing red and green light – Defective battery.
How do you jump start a dead lithium ion battery?
4:356:38DEAD TOOL BATTERY JUMPSTART HACK - Ryobi, Dewalt, MilwaukeeYouTubeStart of suggested clipEnd of suggested clipAnd bring its voltage up to near 20 volts here we go what you're gonna do is we're gonna connect.MoreAnd bring its voltage up to near 20 volts here we go what you're gonna do is we're gonna connect. The white side of the battery. To the other white side of the battery.
What does a red light on a battery charger mean?
Both the 3 amp on-board and 3 amp off-board chargers flash a steady red light if there is an abnormality with the charging system. Generally, this occurs when the charger does not receive a signal from the batteries, in other words there is a break in the connection between the charger and batteries.
Are Makita batteries covered under warranty?
Every Makita® Lithium-Ion Tool, Battery, Charger, and Pneumatic Nailer is warranted to be free of defects from workmanship and materials for the period of THREE YEARS from the date of original purchase.
How do I test my Makita battery?
0:3733:52Check the Health of your Makita 18v & 40v Batteries incl. Charge countYouTubeStart of suggested clipEnd of suggested clipWhether they've been over discharged. All those sort of things this thing can tell you. And it tellsMoreWhether they've been over discharged. All those sort of things this thing can tell you. And it tells you how many charges that battery has had pretty cool oh but tools have just got the 40 volt.
What do the lights on a Makita battery mean?
Flashing Green Light – Ready to charge. Solid red light – Charging (Battery is below 80% charge) Solid red and green light – Charging (Battery is above 80% charge) Solid green light - Charging complete. Flashing red light - Delay in charging (Battery is cooling or the battery is too cold to charge)
How do you charge a Makita lithium ion battery?
3:0410:43How to use Makita DC18RC 18V Lithium-Ion Rapid ... - YouTubeYouTubeStart of suggested clipEnd of suggested clipThis battery in position that means plug the battery charger into the proper AC voltage sourceMoreThis battery in position that means plug the battery charger into the proper AC voltage source charging light will be flashing green color repeatedly.
Step 1: Dismantling & Inspection
Before we start with the dismantling, remember that even if your batteries do not work anymore they most likely still contain a significant amount of energy. Be careful in how you handle them and above all make sure you do not short them out.
Step 2: Testing the Batteries
I had four failed batteries, and checked the voltages of the batteries and cell pairs individually. I found the following:
Step 3: Replacing the Control Board
The control board came with ok instructions on how to fit but they don't explain everything, this may be because it can be used with all of the models of 18v LXT battery Makita have made. Providing you have a bit of common sense you should be ok.
Step 4: Putting It to the Test!
Next came the moment of truth, I put the battery on a charger and it charged. I then fully discharged the battery and once again recharged the battery and that also worked. Eight month on the battery is still preforming perfectly.
