Makita 18v LXT Lithium-ion Battery Repair
- Step 1: Dismantling & Inspection. Before we start with the dismantling, remember that even if your batteries do not work...
- Step 2: Testing the Batteries.. I had four failed batteries, and checked the voltages of the batteries and cell pairs...
- Step 3: Replacing the Control Board.. The control board came with ok instructions on...
Full Answer
How to charge Makita 18v battery with low voltage problems?
How to charge Makita 18V Battery with low voltage problems. If your Makita battery wont charge due to low voltage,sample way to fix it as below step by step: 1. Jump starting the battery with a different charger like RC hobby battery charger. 2. Select Nimh not Lipo to charge. Select lowest amp and charge it for a few min. 3. Bump up amps a little.
Does the Makita Charger reset the chip of the battery?
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.
What could have caused the Makita battery chip problem?
There are two reasons could have caused the Makita battery chip problem as below. One is that the temperature or cutoff or individual cell monitoring sensor in charger that dont allow the batteries to take a charge.
How do you fix an 18v battery that wont charge?
You could try opening the casing and looking for some obvious disconnection fault, but if the electronic control circuit is faulty you will need an electronics specialist to repair it. 18v Lithium battery stopped taking charge.. and they want 140 quid for a new one..
How do you revive a 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.
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.
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.
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 Makita lithium-ion battery?
2:043:40How 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.
How long does a Makita 18v battery last?
around 3 yearsThe Bottom Line To sum it all up, the bare minimum that most manufacturers expect from their batteries is around 3 years or 1,000 charging cycles. Bosch, DeWalt, Hitachi, Makita, Milwaukee, and Ridgid all warranty their Lithium-ion batteries for 3 years.
How do you reset an 18 volt battery?
0:2710:47Revive your old dead 18 volt Dewalt battery trick - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd then actually jumpstart your old battery and make them work under glad to demonstrate that firstMoreAnd then actually jumpstart your old battery and make them work under glad to demonstrate that first off you take the positive side the known good battery and connected to the negative side.
How do you restore a 18v rechargeable battery?
1:595:47Repair/Revive/Recondition cordless tool batteries - YouTubeYouTubeStart of suggested clipEnd of suggested clipI will take and I have a green wire but it doesn't matter it's insulated. This is my positive again.MoreI will take and I have a green wire but it doesn't matter it's insulated. This is my positive again. Okay this positive here is going to touch the positive on my battery that I want to rejuvenate.
How do you open a Makita 18v battery?
2:0014:12How to disassemble recent Makita battery packs to salvage cellsYouTubeStart of suggested clipEnd of suggested clipThis is to pry the plastic shell the Philips screwdriver this is to remove the screw on the top ofMoreThis is to pry the plastic shell the Philips screwdriver this is to remove the screw on the top of the BMS of the battery. This drill bit this is to drill the hole.
Can you bring a lithium battery back to life?
The answer is a definite YES. It is possible to revive a dead lithium-ion battery for you to exhaust its potential before its is ready for disposal entirely. Being rechargeable puts it an extra advantage above its single-use disposable predecessors, which would drain the user economically.
Can you reset a lithium battery?
When you take it out of the freezer, let it thaw for up to eight hours to restore it to room temperature. Place the Li-ion battery in the charger and charge it fully. Hopefully, its performance will improve, it will take a charge again and last longer between charge cycles.
How can I make my battery work again?
0:512:39How to Revive a Dead (AA/AAA) Battery - YouTubeYouTubeStart of suggested clipEnd of suggested clipPart of the two batteries. So that they will touch and hold them between the clamps making sure thatMorePart of the two batteries. So that they will touch and hold them between the clamps making sure that there is a good contact on all sides. Hold everything for 30 seconds. No need for more time.
Why are my Makita batteries not charging?
Inspect the battery charger. If it is cracked or damaged, replace it immediately. Inspect the power cord on the battery charger. If it is damaged, torn or shredded, the battery charger should be replaced.
How do you fix a lithium-ion battery that won't charge?
0:182:23How to - Fix a lithium battery that won't accept a charge - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo the trick is to connect this battery to another battery that has a full charge. And then plug inMoreSo the trick is to connect this battery to another battery that has a full charge. And then plug in the battery tender.
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 you reset a lithium-ion battery?
How to Reset Lithium-Ion BatteriesUse the device containing the lithium-ion battery until the battery is completely discharged. ... Plug the device's power cord into an electrical outlet. ... Remove the lithium-ion battery from the device if the device has an external lithium-ion battery charger.More items...
How many V does a battery have?
By way of comparison a known good battery seems to measure around 20v when freshly charged.
What happens if your battery doesn't work?
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.
Why does my battery keep flashing red?
This causes the battery to be unbalanced. Once you get the red / green flashing lights three times on the charger your battery control board locks the battery from being recharge again .
Can you solder batteries together?
Fixing the other batteries is going to be a little more challenging. Whist it is possible to solder cells together the heat required to solder them risks damaging the cells. Having investigated purchasing a battery tab spot welder I feel that is out of my budget but I may have a go at making a capacitor discharge one.
Can you use a Makita control board with an 18V battery?
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 1: Why Batteries Fail
As with many types of cell chemistry, once the voltage of lithium cells falls below a certain point they are likely to become irreversibly damaged.
Step 2: Dismantling & Testing
Makita batteries are usually held together with a set of four T10H screws. Due to the narrower recess that the screws are in, you'll need either a dedicated T10H screwdriver or a micro screwdriver bit set. Standard 1/4" bits will be too wide for the hole. One of the holes may have a resin cap which will need to be drilled out first.
Step 3: Soldering New Tabs
After re-wrapping any cells with slight amounts of surface corrosion from other cells that had leaked onto them, I arranged the stack of cells in a 5x4 arrangement and secured them temporarily with duct tape.
Step 4: Extending the Case
3D printing is one option available for creating spacers to extend a battery's case by the height of one or two rows of cells, however, using a strip of 3mm acrylic was far quicker, stronger, and has much better transparency than 3D prints.
Step 5: Painting & Future Modifications
As a finishing touch, to hide the residual epoxy and theme the new extension into the old battery case I masked off the centre of the acrylic and cut a jagged pattern on each side to give the impression the two halved had been "torn apart" as if by the sudden arrival of 10 new cells. While this project used almost everything from the old and broken batteries, I still have several empty cases and dead charging boards which I plan to use for future projects such as a smaller 1x5 row Makita battery, as well as experimenting with a USB-C socket and 5v boost converter PCB to allow the broken charging boards to be used again (Even if only for their 18v terminals). I also plan to add a battery life indicator to the front of this battery, though with less granularity than the standard 4-bar gauge on most power tool batteries.
What to do if your battery does not work?
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. So the first step is to get the cover off.
How many V does a battery have?
By way of comparison a known good battery seems to measure around 20v when freshly charged.
What is a Makita battery?
Makita batteries are used to power their range of cordless tools. The voltage output from each battery depends on the number of cells it contains and the voltage requirements of the power tool. Makita battery packs made from nickel cadmium (NiCad) or nickel metal hydride (NiMH) cells each produce 1.2 volts wired in series so, for example, a Makita 9.6 volt battery has eight cells. If you find your battery is dead, fix it rather than purchase a new one.
How to charge a dead Makita battery?
Charge your dead Makita battery using the charging unit. Once charged, remove it from the charger and leave overnight. You need to find out if any of the cells need replacing and bad cells lose their charge quickly.
How to remove bad battery cells?
Remove the bad battery cells you labelled from the battery pack. Simply pry them out using a flathead screwdriver.
How to check if a battery cell is good or bad?
Use a voltmeter to check the voltage from each cell. Good cells produce 1.2 volts: bad cells have lost their power. Attach the sensor on the end of the red wire from the voltmeter onto the positive terminal of a battery cell: Then attach the sensor on the end of the black wire onto the negative terminal of the same cell. The positive terminal is labelled "+" and the negative terminal "-."
How to fix a Makita battery?
If your Makita battery wont charge due to low voltage,sample way to fix it as below step by step: 1. Jump starting the battery with a different charger like RC hobby battery charger. 2. Select Nimh not Lipo to charge. Select lowest amp and charge it for a few min. 3. Bump up amps a little. 4.
Why is my Makita battery chip not working?
One is that the temperature or cutoff or individual cell monitoring sensor in charger that dont allow the batteries to take a charge.
What does it mean when the lights are not flashing on a Makita battery charger?
When put the battery into Makita battery charger, if the lights are not flashing, it mean that the battery or charge is likely defective, but how to judge?
What happens if one of the batteries goes to zero?
Frist, testing the battery cells, If one of the cells has gone to zero, the cell will need to be replaced before any further repair can be done. You may have several batteries with a faulty cell.
Can you bypass a fuse?
You can bypass the fuse when it melt down, however as you are bypassing a fuse the next time such fault occurs there will probably be irreversible damage to the electronics. So what you have done is override the shut down chip with the chip from the other battery.
Can Makita chargers charge a full charge?
For Makita battery compatible, plug a not full charged compatible battery into Makita charger, it is charging if the charging light change frome green to red, otherwise incompatible with the charger.
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.
What to put in between battery packs?
I tend to put a few thermesistors in between the gaps in my big battery packs with a simple controler circute to shut off charging/high current draw if they get too hot
Why does a battery degrade over time?
This is due to inherent chemical reactions which internally degrade the battery over time. These reactions are accelerated by high SOC and at high temperatures.
How many batteries can you charge with a charger?
that can be set depending on the battery you choose to charger you can have upto 5 separate preprogrammed batteries saved or you can just change them for what ever you need when you need it
Can you hack lithium batteries?
Don’t put too much faith into the built in safeties of Lithium batteries. They may protect you from catastrophic failure some of the time, but even the safeties can fail. We have had a lithium battery explode in out test room, not catch fire, explode. If our lab tech was in the room he would have been severely injured. Sure you can hack cells together into refurbished packs, and they will kinda work, but it’s not worth the risk.
Is it dangerous to use a high current battery pack?
I disagree, it’s highly unlikely that any such battery pack will be subjected to such high current discharge as to become dangerous – far too much engineering has taken place to prevent that from happening in the first place. Homemade bundles with high current straps is another subject entirely and there your cautions become good advice.
Can a Ni-Cd charger detect the end of a Li-ion battery?
I’ve seen a battery pack/charger combos that use a Ni-Cd charge routine to charge Li-ion batteries. Ni-Cd chargers can’t detect the end of charge of Li-ion and basically keeps charging until the protection circuit opens.
Is 18650 Li-ion battery good?
These 18650 Li-ion cells are great . I recovered about 200 of them from dead laptop batteries in the recycle bin at my former job, fixed up all of them except for about 1% (totally unrecoverable), contrived a charge controller, and configured a rechargeable battery bank to run my porch lights in the summer time.
How to remove cluster of small batteries?
Remove the cluster of small batteries by lifting them out of the bottom section of the case .
How are batteries joined in a series?
Batteries are joined in a series by connecting the positive terminal of one battery to the negative terminal of another. Rebuild a battery pack by replacing individual batteries that have failed.
How to join batteries in a new cluster?
Join the batteries in the new cluster by soldering copper strips across the correct terminals. Connect all terminals in the new cluster the same way they are joined in the old one.
How to find the voltage of a battery in a cluster?
Divide 18 volts by the number of individual batteries in the cluster; this will yield the voltage of each individual battery.
Where to insert battery cluster?
Insert the new battery cluster into the bottom of the battery pack case.
Why are battery packs bad?
Battery packs are a major cause of tool failure. A rechargeable battery pack is only capable of a few hundred charge cycles before it becomes trash. Corrosion, moisture, and temperature extremes shorten a battery's life even more. Advertisement.