jonjstuart Posted May 29, 2016 Share #1 Posted May 29, 2016 Advertisement (gone after registration) Hi Could anyone tell me if it is safe to plug a 24V battery into the Leica M240 charger? The battery output is 24v/3.75A I've heard that while marked 12V, the charger works on 12v and 24v. Why am I doing this? Using a large portable battery to charge multiple devices on a long trip. Is it safe? Any undue effects? Will it work? Thanks Jon Link to post Share on other sites More sharing options...
Advertisement Posted May 29, 2016 Posted May 29, 2016 Hi jonjstuart, Take a look here charging leica m from 24V source?. I'm sure you'll find what you were looking for!
Fgcm Posted May 29, 2016 Share #2 Posted May 29, 2016 The only way to know is to try. Maybe it works. Franco Link to post Share on other sites More sharing options...
jaapv Posted May 29, 2016 Share #3 Posted May 29, 2016 Or plug in two chargers in series. Link to post Share on other sites More sharing options...
pico Posted May 29, 2016 Share #4 Posted May 29, 2016 The only way to know is to try. Maybe it works. Franco oooh, I dunno! I loaned a digital camera to a colleague who was going to Tibet - you know, the country where you have to change trains because track widths change. He returned with the broken camera saying, "I don't know what happened. I plugged it in an it got real bright for a second. Then nothing." Link to post Share on other sites More sharing options...
FrozenInTime Posted May 29, 2016 Share #5 Posted May 29, 2016 You need a DC-DC like this http://www.amazon.com/DROK-Regulator-Converter-Waterproof-Converters/dp/B00CERPF0M/ Link to post Share on other sites More sharing options...
jonjstuart Posted May 30, 2016 Author Share #6 Posted May 30, 2016 You need a DC-DC like this http://www.amazon.com/DROK-Regulator-Converter-Waterproof-Converters/dp/B00CERPF0M/ I know - that's the sort of thing I'd use, if the literature about the M240 didn't say it was a 24-12V car charger. I'm pretty sure I would find out - one way or the other - what would happen if I just plugged it in, but I'm hoping that someone with experience or knowledge can respond. Link to post Share on other sites More sharing options...
pop Posted May 30, 2016 Share #7 Posted May 30, 2016 Advertisement (gone after registration) I know - that's the sort of thing I'd use, if the literature about the M240 didn't say it was a 24-12V car charger. I'm pretty sure I would find out - one way or the other - what would happen if I just plugged it in, but I'm hoping that someone with experience or knowledge can respond. The literature says it's a 100-240 V AC (50 or 60 Hz) and a 12 V DC 1.3A charger. See the technical data in the user's manual on about p. 254. Link to post Share on other sites More sharing options...
Steve Ricoh Posted May 30, 2016 Share #8 Posted May 30, 2016 The literature says it's a 100-240 V AC (50 or 60 Hz) and a 12 V DC 1.3A charger. See the technical data in the user's manual on about p. 254. Therefore DO NOT plug into 24V DC. Link to post Share on other sites More sharing options...
jonjstuart Posted May 31, 2016 Author Share #9 Posted May 31, 2016 AH - I see the manual also says " The car charging cable supplied may only be operated with 12V electrical systems," BUT The Leica product page says https://en.leica-camera.com/Photography/Leica-M/Technical-Equipment/Power-Supply/Battery-chargers EU and US power cords and car charging cable for 12-24 Volts are included Got through to Leica tech support in 12v, they go with what the manual says - 12V Link to post Share on other sites More sharing options...
bencoyote Posted May 31, 2016 Share #10 Posted May 31, 2016 Airplanes are commonly 24v and so there are 24v to 12v cigarette lighter voltage converters the guts of them are http://www.aircraftspruce.com/catalog/elpages/voltconverter11-12192.php you can get one pre wired fairly cheaply https://www.ebay.com/itm/171789190998 Link to post Share on other sites More sharing options...
pico Posted May 31, 2016 Share #11 Posted May 31, 2016 Some of our commercial trucks and most tractors and big utility vehicles use 24V systems. The rest of the automotive systems are 12.6V. Running/charging states are a couple volts higher. When Leica states 12 to 24V DC I believe they mean just that. The charger steps the voltage down, possibly to 5.5V. I avoid all this on the road by using my vehicles 115v AC system. Link to post Share on other sites More sharing options...
marchyman Posted May 31, 2016 Share #12 Posted May 31, 2016 The charger that came with my M 262 specifically states a DC input of 12v 1.3A. The cigarette plug cord does not contain any specifications. I would not plug the charger into a 24V circuit unless I first verified that there is some kind of step-down circuit in the cigarette plug by measuring the actual voltage output. My guess is I'd read 24V, i.e. there is no step-down circuitry in the plug. Charger AC input range is 100-240V, 50/60 Hz, 300 mA Link to post Share on other sites More sharing options...
Leicabuff Posted June 3, 2016 Share #13 Posted June 3, 2016 You should NOT try that! It will fry your charger. The AC power is automatically switching from 100 to 240V, depending on which part of the Earth you are. But the DC power input for this charger is 12V! The user manual actually states on page 234 under FOR THE CHARGER: • The car charging cable supplied – may only be operated with 12V electrical systems, So don't do it without a DC converter from 24V to 12V. The German manual states the same thing that it is only allowed to be used with 12V electrical systems. Link to post Share on other sites More sharing options...
mmx_2 Posted June 3, 2016 Share #14 Posted June 3, 2016 Otherwise if you want something which is more "Leicastandard" we use this, made in Germany, DCDC-converter for our diesel engines, it comes in a metal casing is IP69 classified and the connector is of industrial standard (bayonett with sealings) : Link to post Share on other sites More sharing options...
jto555 Posted June 13, 2016 Share #15 Posted June 13, 2016 In the EU the charger by law has to have a label on it for the the power it is rated for. So if the charger does not say it is rated for 24v then I am afraid that it is not rated for 24v. Here is a converter for 24v to 12v which should save anything going bang: https://www.amazon.co.uk/Voltage-Dropper-Converter-Reducer-Inverter/dp/B0034BACP0 Link to post Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.