How to use new batteries in old Makita 18v tools. | Easy trick!

Gday

Makita has been making the lithium ion 18v range of power tools for a long time now and the batteries have looked the same the whole time. The problem is they have changed the batteries slightly and cross compatibility is not always a given.

New batteries on old tools is something that makes sense to most people and the thought of buying a new three amp Makita battery in 2020 when other companies are putting out 12 amp hour batteries is insane.

If you cant use one battery for all your teal you might as well consider another faction of power tools.

This is a do it at your own risk tip/trick and if you do not fully understand the consequences you might want to reconsider.

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[Pvalila]

So many videos like this where they don't explain why the nub is there and what are the risks if you remove it. A big plus for explaining it!

[StanCook]

Also if anyone is not aware there are adapters out there for about 10 bucks a piece or so that will swap batteries between manufacturers you can put a Makita on a DeWalt or Milwaukee on a Makita Etc

[FenderSidekick]

Thanks for the post.
Just did this and am able to use BL1860B-2 5Ah batteries for my BHP454 hammer drill. Drill works great and it sucks they stopped selling compatible batteries for it.

[curtarama]

I did this trick years ago too. It worked, but ended up ruining every new battery I had.... Just like you said.

[robstewartchannel]

I removed the nubs yesterday. Good point @finn about over heating. My issue is that I am often working remotely and want to use my tools all day but not for extended periods of cutting in one go. So, hoping I will not have too much of a prob with overheating.

[StanCook]

I took a different approach and removed one portion of the little fins that are inside the battery where it slides in the tools socket you can cut out about a quarter inch and the battery will fit all tools old and new, tin snips work fine.

[Oneinquality]

Thank you very much! I did the same with sucess on Circular saw BSS610, Grinder BGA 452, Reciprocating saw BJR 181, Drill BHG 45 with replacement battery BL1860B.

[Mwwwwwwwwe]

I bought 7x 2ah lidil(parkside) batteries for£7.5 then 3d printed an adapter for my makita grinder... now I have plenty spare batteries for my maklidil grinder🤣

[braydangardner]

Did the same with a makita Sawzall so it would accept the 2 amp/hour battery we had on hand, those batteries were never the same but it got us out of a tight spot.

[Railhook]

My Makita drill driver is coded black 18V with no star on the bottom, yet the extra tabs are not there. It does have a random gold star near the serial number though.

[es_defender]

Thanks, worked a treat and saved me money :-)

[jamesfair]

I did this and burnt up my grinder. You owe me a new grinder as you never stated don’t try this at home. You actually said if I want to do it go ahead and do it lol 😂

[chrisn]

Is there risk to ruining the newer style batteries if I remove he my as one comment said?

Batteries are damn expensive so wouldn’t be worth it if there’s a chance of killing newer style batteries?

[notj]

Yep, any tools I found that had that nub got a quick swipe with a dremel a while ago.

[marshallz]

i cut that part off the battery so it works with all my tools old or new. why alter the tool? alter the battery. personal pref. it works either way. good on ya matey

[wallacegrommet]

Read somewhere that the battery protection circuit locks out the battery after these modifications when you put it on the charger. Anyone experience this?

[Finntheweekendwarrior]

What other tricks are out there for the old battery tools?

[jamesangus]

I see. I couldn't figure out why my 5amps fit in my impact but not my drill. Pretty wack

[douglasbattjes]

You said this is for over heating, a little knob on the tool, how does this tool know what bat you have in it? Rep said this is so they can sell new bats, others have a place you have to remove a channel so the silver bar can slide in. Why they have 3.0 amps and 5.0 amps, , they just last longer. you can replace the old Li bats. with 5.0 if you like so they will run longer.