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Hi all I have just come back from a trip to Scotland with my son in his motor home. I noticed that we could only charge my camera batteries when on a camp site hooked up to mains power. I noticed on my return that go outdoors has small inverters that charge from a cigarette lighter in the car -- 12vdc-240ac with a built in S/O. Has anyone tried this idea out? Or any other system?
Kind regards mike
Expro do a charger that runs of mains AND 12V (and their own batteries) although you may need to check comptability with Olympus chipped batteries.
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I just use a USB charger and a USB adapter for the car. It is not as fast as on the mains, but it works. Cost me $4 plus about $1.50 for a tiny digital DC voltmeter which I connected to the leads so I can keep an eye on the voltage. When it reads 8.4V unplugged, or about 9.3V charging, I know it is full.
Thankyou both, I suppose it's horses for courses, I didn't think a USB would be powerful enough to charge the battery? How do you connect the em1mk2 battery? Can you post a link?
Kind regards Mike
As these knock off chargers don't usually have any kind of automatic cut-off they only have two pins, + and -. The voltage readout tells me how far along it is. Note that it reads about 0.12V higher under load. I know that a fully charged battery reads 8.39V unplugged, so I just turn it off if it reads 8.5V while charging. I wired a USB charger into the car with a little switch on it so I don't have to have the ignition on to power it through the cigarette lighter socket. This charger's output is only 500mA, which is why it is slow, but it works and as yet I have not felt the need to shell out €80 on a second battery.
Hi Dan, thanks for posting the images, it doesn't look as completed as I thought I will take a look in maplins too see what they have,once againt thanks
Kind regards Mike
We gave up on inverters in the motor caravan many years ago. You can get a 12v supply for laptops, printers, dongles, phones and BLN1 batteries. We don't carry a mains cable although we used to when skiing and using a small generator. Newer 12v seems to be USB but you can get adapters to standard 12v.
It can be adjusted to just under the 8.4V/1100mA max charging power so it can't overcharge the battery. I will just connect it to 12V in the car and see what happens. If that fails, I will look into the inverter option.
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