Question about Makita 2 Bl1830 18v Battery,dc18ra Charger Lxt Fr Drill

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How long do u charge a makita li-on battery cartriage for on the first charge? as the information booklet we got with it doesn't give the information

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The charger should indicate when the battery is fully charger. look at the lights and they will show you. Usually though it is about an hour.

Posted on Jul 18, 2010

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It has to be shook each time i use it, also can the battiers stay on charge when not in use?


If you have a machine with a li-ion battery it MUST me placed as soon as it stopped on the charger and leaf them on the charger and as soon as they get slowing down the rpm of the machine change the battery it has no memory effect or capacity problem Everything opposite to compare with nickel cadmium batteries ,and that because of the old Makita machines with only have 2 battery connectors are now for 60% modified with a 3 (star)contact battery holder by Makita if it was in warranty time by Makita, the switch and contact plate are modified because of the deep discharge protection of makita because it new (star) li-ion batterys have been allways by every brand on protected against discharge with a similar or comparable protection with a small circuit with a refference power on it , a li ion battery can be boosted with a special cadex charger that will bring back the referrenced power so the charger will if boosted working again on the battery . but if your machine shooks has to do with a contact or soldering problem om the switch possibly or to short carbon brushes but not by the battery .

Oct 28, 2015 | Makita Tools & Hardware - Others

1 Answer

How can I reset chip on my Makita lithium ion 18v battery


Based on experience I can tell you that it is is generally the temperature/cutoff/individual cell monitoring sensor in charger that dont allow the batteries to take a charge. Once the same condition is detected 3 times by the same charger it considers the batteries to be bad and refuses to accept it. I have 2 batteries that wont charge on one charger but works perfectly fine when i charge it on my other Makita charger so basically there is no problem with my batteries.
I would suggest first you check the voltage of your drained battery by a test multimeter. For 18volt battery if it is close to 18volts 1-2 volts less is just fine! Then there is no issue with your battery. Makita chargers are very expensive hitech which is useless in my opinion the lipo chargers (used in rc hobby) example skyrc are better quality cheaper and does a better job and you can easily charge your makita battery with it as well but this is only recommended if you decide not to go with Makita charger any more. Some basic information about multi chargers for Li-ion battery to follow the safety is make sure you use the right connectors with correct polarity. For 18v volts max voltage should not exceed more than 20.50 and the allowable charge current is 2.7amps also ensuring that batteries dont heatup.

Oct 05, 2014 | Makita 2 Bl1830 18v Battery,dc18ra Charger...

1 Answer

Three makita batteries wont charge 18v li-on


I did get an educated electronics eng. tell me li ion batteries 4handtools,are manufactured to only be recharged a set number of times,to avoid tool damage.

Oct 13, 2011 | Makita Tools 18V 1/2" Lxt Lithium - Ion...

2 Answers

One question please, I have makita cordlless


according to the schematic I saw yes you can and I think that you will be pleased with its performance, their operator manual even lists the weight of tool with this battery. Makita has a 1 year limited warranty on the Li-Ion battery that you might want to consider if you have the receipt.

May 11, 2011 | Makita 18V LXT Lithium - Ion Cordless...

2 Answers

Hi, I have repaired 3 Makita 18V 3Ah Li-Ion batteries recently by removing good cells from other faulty batteries. The Voltages are good now on all 3 and they charge/discharge OK on my own charger but...


Some manufacturers put some chip on their battery so it can be identified by their charger. If you use a generic battery often, it will not charge or work properly. LG does this with their phone batteries! So you have to use another charger to charge them.

Jul 07, 2017 | Makita Drills

1 Answer

I have a li-ion Makita BL1830 18V 3.0Ah battery that can't be charged...when on the charger the bottom two lights flash red..it will charge my other battery, so it doesn't seem to be the charger


Sorry Mate your battery is dead...
The makita lithium batterys dont like getting worked hard quickly.
There is a chip in them that recognice each battery to each specific charger. Try another charger. This has not worked for me. Try anyway

Nov 01, 2009 | Makita Tools 18V 1/2" Lxt Lithium - Ion...

8 Answers

Problem charging makita batteries 18v li-ion


Unfortunately, Makita’s li-ion battery packs have a design flaw. After having the same problem with my two batteries, I took it apart and saw the problem immediately. You see each battery pack has ten li-ion battery cells and a circuit board with a memory chip witch holds the charging history of the battery pack. But that memory chip constantly draws power from 2 of the 10 batteries. The current it draws is very small but if you consider it over 8 month or more, the power drain becomes very significant. You end up with a battery pack with 8 still fully charged battery cells and 2 drained battery cells. When you put this battery pack in the charger, it detects weak battery cells, assumes they are defective and refuses to charge. To avoid this problem you should charge your battery pack often, even if you haven't used it, every two months should be ok.
I suspect that Makita doesn’t make these battery packs, they make power tools, good ones too. Buy Makita should definitely have a few words with their supplier before they become a liability!

Aug 16, 2008 | Makita Tools 18V 1/2" Lxt Lithium - Ion...

1 Answer

Battery charger just flashes to say the battery has to cool down but will not start charging.tried another charger same thing happens but does not show that the batteries are faulty!


Unfortunately, Makita’s li-ion battery packs have a design flaw. After having the same problem with my two batteries, I took it apart and saw the problem immediately. You see each battery pack has ten li-ion battery cells and a circuit board with a memory chip witch holds the charging history of the battery pack. But that memory chip constantly draws power from 2 of the 10 batteries. The current it draws is very small but if you consider it over 6 month or more, the power drain becomes very significant. You end up with a battery pack with 8 still fully charged battery cells and 2 drained battery cells. When you put this battery pack in the charger, it detects weak battery cells, assumes they are defective and refuses to charge. To avoid this problem you should charge your battery pack often, even if you haven't used it, every two months should be ok.
I suspect that Makita doesn’t make these battery packs, they make power tools, good ones too. But Makita should definitely have a few words with their supplier before they become a liability!

Jul 03, 2008 | Makita Tools 18V 1/2" Lxt Lithium - Ion...

2 Answers

Makita dc1804f charger will not charge new i-mh 1834 18v battery


I think your tryiong to charge NIMH batteries oon a charger designed for Lithium Ion batteries. With all the new style batteries such as NICAD, NIMH and LI-ION, charging becomes difficult. Most chargers pre NIMH and LI-ion, were designed for NICAD's. The best advise, match your batteries with the correct charger

Feb 06, 2008 | Makita 18V LXT Lithium - Ion Cordless...

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