compatible with 110V

[d3rob]

Would my 240v ac rated drill battery charger still work adequateley on 110V? by Ohms law I expect the batteries to charge more slowly as the current would roughly halve on the primary of the transformer but am I missing something more significant?

 

[johnb2713]

Would my 240v ac rated drill battery charger still work adequateley on 110V? by Ohms law I expect the batteries to charge more slowly as the current would roughly halve on the primary of the transformer but am I missing something more significant?

Assuming its a LiIon charger, the often have universal input 100 - 240v. If this is NOT the case then the answer is probably not, there would be insufficient supply to run the electronics inside. Have a look at the spec.

 

[Richard-the-Ninth]

halve on the primary of the transformer

What transformer?
Most electronic items no longer have directly connected transformers, they often have "Capacitive droppers" and some other electronic components (Depending on circuit design, this is just in general) But the upside of this is that as johnb2713 pointed out, most "electronic power supplies" can work happily on anything from 100 - 250v ac You should look at your charger to see will it run at 110v.

I should also mention if your 110v is from a site transformer your charger may not work, as these have 55-0-55 v

​

 

[johnb2713]

I should also mention if your 110v is from a site transformer your charger may not work, as these have 55-0-55 v

​

Why? surely it's still 110v centre tapped to earth, I dont reason why they wouldnt work

 

[Andy™]

I should also mention if your 110v is from a site transformer your charger may not work, as these have 55-0-55 v

now this will blow your mind... there not always 55-0-55... sometimes there 63.5-0-63.5. but the end result is still the same, 110v between lives

 

[Andy™]

Would my 240v ac rated drill battery charger still work adequateley on 110V? by Ohms law I expect the batteries to charge more slowly as the current would roughly halve on the primary of the transformer but am I missing something more significant?

try reading the label on the back, itll have its working voltage range on there. sometimes they are 100-250v, sometimes there 220-240v. for somewhat obvious reasons, itll probably not work on 110v if it says 220-240 etc...

 

[Richard-the-Ninth]

110v centre tapped transformer is only 55v/leg
When capacitive droppers are designed they expect 230v on 1 leg and 0v on the other, if you send 55v up each leg there is a probability it will not work.

This is of course speculation that it is a 55-0-55 transformer supplying the battery charger.

 

[Andy™]

110v centre tapped transformer is only 55v/leg
When capacitive droppers are designed they expect 230v on 1 leg and 0v on the other, if you send 55v up each leg there is a probability it will not work.

This is of course speculation that it is a 55-0-55 transformer supplying the battery charger.

still wrong. the charger will most liely be class 2 and not have a connection to earth. 110v tools dont need the midpoint anyway, just the 2 phases, going by your logic then any 110v tool will also not work since itll only get 55/63.5v

 

[johnb2713]

110v centre tapped transformer is only 55v/leg
When capacitive droppers are designed they expect 230v on 1 leg and 0v on the other, if you send 55v up each leg there is a probability it will not work.

This is of course speculation that it is a 55-0-55 transformer supplying the battery charger.

Oddly enough I tried it today. Makita, DeWalt, Draper, Titan all worked perfectly on 55 0 55.

Im not sure I agree with you on the capacitive droppers, by not having an earth on the charger, the lines are free to float wherever they like internally.

 

[ruggedscot]

Would my 240v ac rated drill battery charger still work adequateley on 110V? by Ohms law I expect the batteries to charge more slowly as the current would rouhly halve on the primary of the transformer but am I missing something more significant?

Ok to sort this out - tell me the charger make and such - also look at the label. Most chargers these days have a smps in them, they rectify the mains and then run this through a switcher and HF transformer to the DC side when then uses electronics to charge the battery independent on the voltage of the mains. These are class II devices so have no earth. it doesnt matter if its 240v or 110v or 55-0-55.... the only wires that matter are the two lines. the cord will be two core. the 55-0-55 volt transformer is only making sure that there is only ever 55v to earth. for safety. give us some more info and can get you the answer you need.

typical charger...

https://spaldings.co.uk/products/sp...akita-dc18rc-single-battery-charger-240v-110v

 

[kerching]

Well at least there are some folk on here who know how a site transformer works, obviously not everyone though

 

[ruggedscot]

Well at least there are some folk on here who know how a site transformer works, obviously not everyone though

Who is the clown being directed at.... ? Sit transformer. Isolation from mains. And a low voltage to earth. Through the centre tap. Most site shocks are line to ground. Hence using them.

 

[d3rob]

Ok to sort this out - tell me the charger make and such - also look at the label. Most chargers these days have a smps in them, they rectify the mains and then run this through a switcher and HF transformer to the DC side when then uses electronics to charge the battery independent on the voltage of the mains. These are class II devices so have no earth. it doesnt matter if its 240v or 110v or 55-0-55.... the only wires that matter are the two lines. the cord will be two core. the 55-0-55 volt transformer is only making sure that there is only ever 55v to earth. for safety. give us some more info and can get you the answer you need.

typical charger...

https://spaldings.co.uk/products/sp...akita-dc18rc-single-battery-charger-240v-110v

Thankyou for all the info on this one. Simply, I want to take my UK battery operated drill to use at a Caribbean island house where the sockets provide 110v (American sockets) it costs about $350 to buy a simple drill! My UK drill has a Bosch Li ion charger AL 1820CV says AC input 220-240V 50W output 10.8-18V DC 2A. Would it work?? and...yes-no earth just a two wire plug.

 

[johnb2713]

Thankyou for all the info on this one. Simply, I want to take my UK battery operated drill to use at a Caribbean island house where the sockets provide 110v (American sockets) it costs about $350 to buy a simple drill! My UK drill has a Bosch Li ion charger AL 1820CV says AC input 220-240V 50W output 10.8-18V DC 2A. Would it work?? and...yes-no earth just a two wire plug.

Probably not because it wont have correct voltages for integral electronics

 

[kerching]

Who is the clown being directed at.... ? Sit transformer. Isolation from mains. And a low voltage to earth. Through the centre tap. Most site shocks are line to ground. Hence using them.

Certainly not directed at you! You are one of the few who have replied CORRECTLY and helpfully .

 

[ruggedscot]

Thankyou for all the info on this one. Simply, I want to take my UK battery operated drill to use at a Caribbean island house where the sockets provide 110v (American sockets) it costs about $350 to buy a simple drill! My UK drill has a Bosch Li ion charger AL 1820CV says AC input 220-240V 50W output 10.8-18V DC 2A. Would it work?? and...yes-no earth just a two wire plug.

I'd look towards getting a 110v charger. Should be able to find one for a fraction of the price of new drills etc. Also if the supply in the Caribbean follows the us it may have 220v for high current devices. That could be used to charge your batteries. But I'd go with getting a 110v charger sourced.

 

[BorisJ]

Buy and take one of these

https://www.tlc-direct.co.uk/Products/SC5416W.html

 

[ruggedscot]

https://www.amazon.com/SANIKLITE-An...prefix=bosch+18+li+ion+charger,aps,160&sr=8-3
american amazon site then locate the yank version of your charger... bingo.

 

[d3rob]

Buy and take one of these

https://www.tlc-direct.co.uk/Products/SC5416W.html

Many thanks for that.

 

[d3rob]

https://www.amazon.com/SANIKLITE-An...prefix=bosch+18+li+ion+charger,aps,160&sr=8-3
american amazon site then locate the yank version of your charger... bingo.

excellent I can use my UK drill thanks.