Originally posted by mattv I am needing to come up with a way to power my K-5 for longer than 1 or 2 batteries can handle, but want portable (not kind of portable) power. I know a 12 volt battery with an AC inverter, etc, will work, but I want smaller. Here is what I am thinking.....AA holder for the DBG4 can be drilled out to pass wire through to solder to contacts (on the holder, not grip) and sealed up using a 3.5 mm headphone jack as a power line. I have a small pelican case for an Ipod that has a waterproof jack (and case is waterproof). Pass that through and throw 4 Di90 batteries in parallel wired up inside that. Does this sound like I have reinvented a wheel, or is it a sound idea?
Hi mattv,
I heartily recommend NOT wiring up any Li batteries directly in parallel (or serial). Risk of blowing them up is too large and they can be dangerous.
Go for the Bob-O-Rama power supply (
DIY Power Supply for Pentax K5 DSLR ). It uses a state-of-the-art high-efficiency inverter module.
I do not agree with maxfield_photo. The specs of the inverter module used look very good. 70mV of ripple (mentioned on datasheet of module) is small and adding a capacitor (e.g. 100uF) on the output will reduce that to next to nothing.
I would not take the other design (
DIY AC Adapter for The Pentax K10D and K20D ). The regulator technology used there is out-of-date and wastes a lot of energy by generating heat.
The plug can be a pain to get, but it would be worth the trouble, rather than working on the nice body of the camera.
Cheers, jephi!