12v cigarette lighter charger for 12v and 18v batteries

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Roofer / Carpenter
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Good afternoon. Just recently bought a GBH 18v vec and been looking for a in car battery charger maybe which takes both 12v and 18v batteries. The only one I can find is a wireless one but it seems difficult enough driving without having to hold a drill in place on a wireless charger. Thank you in advance for any tips.
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Joinery installation in the broadest sense
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Hello greatbabybear
The only in car chargers Bosch do are the wireless ones unfortunately. They do come with a mount though so if you could find somewhere to fix it - somewhere in the cab or back of the van - you wouldn't need to be holding the drill steady while driving. The tool w/battery or just the battery can just hang off the mount.
They do an L-Boxx charging bay too that comes with an inverter to change from your 12v DC lighter output to 240v. With the bay, you just leave your drill in the box (battery to the back!) and mount the L-Boxx to the bay. Nothing is in danger of getting flung around that way. 

If you don't want to invest in all that, invest in a 12v DC to 240V AC inverter. These inverters will often have your stander UK 3 pin 240v plug sockets to plug your charger into and a 12v DC cable with the cigerette lighter plug on the other end. I know quite a few people have these set up in their van. 
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Good afternoon bailey. Thank you for your reply. Since my post I have discovered those options. But seems very expensive solution. I ancient looking into getting an inverter to do your suggestion. But more of my question would be can Bosch not just create a cigarette lighter plug in multi charger. My thinking is if a car is 12v surly it wouldn't take that much effort to convert from 12v to 18v for the charger.they already do a multi charger for 10.8v and 18v battery which plugs into 240 mains. Which is small and compact. Rather than going to the bulkiness of an inverter then plugging your 240 into that. Could they not just change the transformer inside the charger from 240 to 12v. Does that make sense. Thank you David.
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I hear you David and have to say I agree. 
It'd be a pretty straight forward option to offer a 12v dc (lighter socket) to 18v dc standard charger. A couple of other manufacturers do it. I don't think it'd be controversial to say most Bosch Pro users are out and about in vans with their tools a lot of the time. As such, it makes me wonder why they've not offered a standard 12v-18v Li charger for these users. Bosch did used to do a charger with a lighter socket for their NiCad batteries. Why they seem to have dropped the idea is anyones guess. 
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I'd give my left nut for one of these. I was searching for one and stumbled on this post. It would be brilliant to be able to charge an 18v pro tool battery or two whilst driving between tasks. Even if it's slow, it would just be easier and definitely safer than having to find somewhere at the other end to leave the charger and valuable batteries for half an hour and get potentially nicked. This way, when you arrive the batteries are topped back up. Ideally a charger that can trickle charge a couple of battery packs at a time.

Given there's a bunch of 3.7v 18650's inside, a 12v input at even 1A/h should be able to give them a fair bit of juice over an hour.

I'd gladly pay for a charger that I could run off 12v input. Please do this!

This post was edited by Uri75 on 16.11.2021, 07:26 o’clock
Reason: modified it with details fleshed out.

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Other woodworking
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Good Luck asking Bosch for anything - they cannot even deliver current products let alone develop anything new!

Have a look at Hikoki UC18YML2(H0Z) or DeWalt DCB119 or Makita DC18SE or MILWAUKEE M12-18AC.  The major manufacturers offer what you seek.

The crazy thing is that in the good old days before Bosch went downhill, they did offer a car charger for the older O type batteries
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There must be a clever person in this forum who could make this... 
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Clever people no longer buy Bosch.