Hitachi 24v to Parkside X20v Battery Adapter

[Turbo]

I have an Hitachi 24v sds drill and both the NIMH batteries have died. I decided to make an adapter to use modern li-ion batteries on the drill.

First thing was to strip the old battery.

All the electrics were in the bottom half of the battery.
I removed the circuit board and stripped out any unnecessary components, leaving just the 2 battery contacts for the drill.

The board was mounted back into the top half of the battery using glue and screws.

I had to decide which battery platform I was going for. I have both makita and parkside batteries but I went for parkside because I have a few if their adapters in stock.

I made up an adapter plate from plastic that sits under the top half of the battery and the parkside adapter screws to it. The wires from the adapter were fed through and soldered to the battery contact pcb.

The drill sits a bit higher than before but the balance is still ok with the lighter battery.

Some may argue that it should have a 24v liion battery instead of a 20v.
But these old brushed motors are voltage tolerant and in fact the same motor is often used in 12, 14 and 18v tools.
I have been running my 24v Bosch 24v sds on makita 18v liion batteries for many years so I know it works.

The 20v liion battery actually gives the drill as much if not more poke as the old 24v nimh battery with a much extended run time.

 

[Turbo]

There was just one issue with the conversion.

The drill has a rubber strap to stop the battery shaking during use, especially chiselling. This would wear out and damage the contacts.

The strap is now too short but I have a few ideas to make it fit. These involve extending the drill housing in some fashion.
I am going to strip and service the drill and investigate where is safe and strong to attach things to.

 

[Turbo]

I have made a few similar adapters, this was one of the easiest.

I had a thread in the freebies section offering old battery cases if someone feels like trying it.
The thread has disappeared but hopefully @Wozzaaah has been able to recover it.

One person wanted the ryobi cases I have but sorry I don't remember who you are. Send me a pm if you read this.

I also have dewalt, black and decker, hitachi and makita plus another 24v Hitachi like the one I made.

The adapter I used is no longer available on aliexpress but search for power wheels adapter for parkside x20v.

https://a.aliexpress.com/_EQOtIu8

 

[frank horton]

I just bought and adapter from Temu, Poland...around 15 euro's to fit my 18volt fuel Milwaukee machine to Parkside batt.....
A new 18v x 5AH Milwaukee batt here is 200 euro's...

 

[Kram]

Some may argue that it should have a 24v liion battery instead of a 20v.
But these old brushed motors are voltage tolerant and in fact the same motor is often used in 12, 14 and 18v tools.
I have been running my 24v Bosch 24v sds on makita 18v liion batteries for many years so I know it works.

The 20v liion battery actually gives the drill as much if not more poke as the old 24v nimh battery with a much extended run time.

Even so, with a Li battery it is very easy to burn out the brushed motors in these old tools. They were not designed for the extra heat, the vents are small and usually no cooling fan on the motor.

If you want jt to last, you must be sensible with the duty cycle, 30 seconds on for a few minutes rest.


I have done a few adaptors myself and on somethng old, you'd never want to go back to the original batteries, so it can be made more compact by putting the adaptor directly on the tool instead.

 

[Robotstar5]

I had a thread in the freebies section offering old battery cases if someone feels like trying it.
The thread has disappeared but hopefully @Wozzaaah has been able to recover it.

If there has been no activity for 2 weeks on a thread in the freebies section it will be permanently deleted.

 

[gaz1]

add a hook where those bolts are and extend your strap via hooks so you can use the original strap

 

[Turbo]

add a hook where those bolts are and extend your strap via hooks so you can use the original strap

It has to hook onto the drill body, the bolts are on the adapter!

 

[gaz1]

It has to hook onto the drill body, the bolts are on the adapter!

i see it now



a simple metal swing arm should be able to do it from the body to the old type stretch belt of the battery also you might be better screwing a base onto the hitachi handle so you can use the original hook type

simple plastic window bottem can be glued well and also screwed to the drills body