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
How to fix a dead Makita battery?
Makita 18v LXT Lithium-ion Battery Repair
- 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 ...
- Testing the Batteries. I had four failed batteries, and checked the voltages of the batteries and cell pairs individually.
- Replacing the Control Board. ...
- Putting It to the Test! ...
Can Makita batteries be repaired?
Within each Makita rechargeable battery pack, a number of smaller rechargeable batteries are linked together to obtain the proper voltage level. If even one of these batteries goes bad, the entire chain will not work and neither will your tool. The Makita battery packs can be repaired with just a few simple tools.
How to fix Makita battery charger problems?
How to charge Makita 18V Battery with low voltage problems
- Jump starting the battery with a different charger like RC hobby battery charger.
- Select Nimh not Lipo to charge. Select lowest amp and charge it for a few min.
- Bump up amps a little.
- Charge it a little more.
- Bump up amps again.
- Charge few more mins to 18V.
- Put charger setting back to lipo now. ...
- Now charge with original charger.
How long does a Makita battery take to charge?
The Makita 18V 1.5 Ah battery takes about 15 minutes to charge, while the 2.0 Ah takes only 20 minutes. This is as fast as it gets. Not only does Makita have an industry-leading charge time, but it also delivers longer runtime than other Li-Ion batteries with similar capacities.
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.
How do you fix a Makita battery?
1:583:40How to repair Makita battery - YouTubeYouTubeStart of suggested clipEnd of suggested clipFirst put the batteries into the inner holder now we need to connect all batteries with nickelMoreFirst put the batteries into the inner holder now we need to connect all batteries with nickel strips I used my DIY spot welder probably in the next movie I will describe how to make such a spot.
Can Makita batteries be rebuilt?
Rebuild Service for a Makita® 1820 battery pack. For the cost of this service, we will open the battery pack, replace all cells, test, and reassemble. Connectors and circuit boards are re-used and are not replaced or serviced.
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.
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.
Why does my Makita battery not charging?
Plug the battery charger into a working electrical outlet. The battery charging lights will flash green, indicating the unit is receiving power. If the lights are not flashing, plug the unit into a different electrical outlet. If the unit still does not receive power, it is likely defective and should be replaced.
How do you fix an old battery?
How to Recondition a Car BatteryRemove the battery and remove the rubber that protects the caps. Then, remove the caps as well. ... Fill a battery with the distilled water and recharge it. ... You can also try to replace the acid inside a battery and mix a new acid with the distilled water.
Can old power tool batteries be repaired?
Battery Pack Rebuilds There's no need to let your trusty old cordless tool go when it no longer holds a charge, and a replacement battery is too costly or hard to find. Let a trained professional at an Interstate All Battery Center rebuild your NiCd or NiMH battery pack to keep your tools powered up.
How do you restore a 18V rechargeable battery?
3:115:47Repair/Revive/Recondition cordless tool batteries - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo we're going to go ahead and hook up the negative from our series to the negative side that staysMoreSo we're going to go ahead and hook up the negative from our series to the negative side that stays there now we're going to take our positive side and just tap it it's going to make a spark.
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 you charge a dead Makita battery?
2:3527:41How I Fixed My Faulty Makita Battery - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo basically what the Sutter line is to get a wire. And connect it from your good battery to yourMoreSo basically what the Sutter line is to get a wire. And connect it from your good battery to your bad battery.
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.
How do you charge a dead Makita battery?
2:3527:41How I Fixed My Faulty Makita Battery - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo basically what the Sutter line is to get a wire. And connect it from your good battery to yourMoreSo basically what the Sutter line is to get a wire. And connect it from your good battery to your bad battery.
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.
How do you jump a Makita battery?
0:498:02Tool Battery Car Jump Start? - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo we need to connect the negative side to a negative post. And then positive side to our positiveMoreSo we need to connect the negative side to a negative post. And then positive side to our positive post.
What do the lights on a Makita Charger 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)
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.
Step 1: Batteries
I have two Makita 18V 3Ah bad batteries. By saying bad - I mean, that they have low voltage and won't take a charge on regular Makita charger. I took both batteries a part and found that they have a little bit different protection circuit boards.
Step 3: Replacing Bad Cells
There is only way to solve this problem - by simply replacing dead cells. I choose battery with balance circuit as a project base and another one - will be a donor. Using knife removed bad cells and tried to save battery tabs, because I’ll use them later. In same method removed a pair of good 18650 cells from donor battery.
Step 4: Protection Circuit Board
Checked - what voltage we have. I took my Imax B6 charger and charged battery to raise voltage up to 18V. I did that, because I had a very small hope, that protection circuit wasn’t triggered and with normal battery voltage regular Makita charger will start charging. But that’s was a bust.
Step 5: Repace Bad Circuit Board
Desoldered old protection circuit. Because new protection board isn’t compatible with balance circuit so it was removed too. Installed new board, soldered positive and negative terminals, plus red wire to first group of cells positive side.
Step 6: Another Charging Option
In case you don’t want to buy replacement circuit and to be addicted to Makita regular charger, or maybe your charger is broken, there’s another charging option. All you need is to solder lithium batteries balance wire between each cells group and find a good place for connector at battery housing.
Step 7: Assembling Back
Assembled battery back and put it on regular charger to check does replaced circuit board solved the problem. And yes, it did. Battery fully charged and performs very well.
Can lithium ions be overcharged?
Lithium ions don’t have a trickle charge mode at all. They can’t be overcharged. It’s typically 4.3 volts per cell and that’s it. If you go over the limit, they will vent and burst into flames.
Does a Makita charger reset the chip?
yes I found that the makita charger will reset the chip of the battery if you charge the pack first to 21v and put it on the makita charger plug and unplug the charger 2 or 3 times with the battery on. now it hast to be 21.0v if you put the battery to charge with 21.anything the battery will be ruined.
Why are lithium batteries so good?
Lithium batteries are great because they carry a large charge for their weight. Also they can be recharged at any point in the discharge cycle without any ill effects (there is no memory effect). They discharge extremely slowly if left unused, so can be stored for long period whilst still retaining most of their charge.
Can a battery be recharged if it is discharged?
Also if they are discharged beyond a certain point they are impossible to recharge. Because of these limitations they normally include a fair amount of electronics within the battery casing to control the charging and discharging and keep the operation of the battery within safe limits.
