How to make a 5 volt battery?
How to make a 5 volt battery?
(OP)
I have a wireless network camera that I want to mount in a location that doesn't have an outlet (the camera I own is the D-Link DCS-900G, and details can be found here: http://www.dlink.com/products/?sec=0&pid=459). Anyway, the users manual states that the power supply cord is a 5-volt, 2.5-Amp power supply. I know so little about electricity, but if I remember correctly I could get 6 volts by placing 4 1.5 volt batteries in series, correct? However, would 6 volts damage the unit? If I did create a 5-volt battery system, doesn't the voltage on a battery drop as it's used? How long would batteries run the camera? (Obviously it depends on battery size and type, but I have no clue where to begin).
Anyway, I just need to work up some way to get some juice to the camera, and a 50-foot extension cord running through the middle of my front yard is an option I'm sure my wife isn't going to go for, and I have no desire to pay someone to run electricty to the site. Thanks!
Anyway, I just need to work up some way to get some juice to the camera, and a 50-foot extension cord running through the middle of my front yard is an option I'm sure my wife isn't going to go for, and I have no desire to pay someone to run electricty to the site. Thanks!






RE: How to make a 5 volt battery?
Other things to consider.
A bunch of 1.5V dry cells aren't going to last long.
A six volt lead acid battery will last far longer.
Six volt LA batteries put out more than 6V.
Six volts would probably damage the unit but 5.2 - 5.3 probably wouldn't.
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: How to make a 5 volt battery?
If you charge the cells while they are in the circuit, e.g. with a trickle charger, you _must_ use a voltage regulator, because it takes something like 7V to charge a 6V lead-acid battery, and probably a bit more than 5V to charge a 4.8V NiCd battery. Most 5V devices will tolerate some undervoltage, but not overvoltage.
OR, run it from the specified AC adapter (no warranty issues), and run _that_ from a computer UPS, which should be good for a couple of days.
Mike Halloran
Pembroke Pines, FL, USA
RE: How to make a 5 volt battery?
So to Battery. Nicad or NiMH are 2000 maH for the
very high capacity AA size, 1.2 votl per cell,
will last about 3/4 hour
Enersys X cell (fat D sealed lead acid)
is 5 amp hours 2 volts per cell (2.14 charged).
3 in series would provide a couple hours and last
through about 300 charge discharge cycles.
Cost is more than $10 a cell on the open market.
Golf cart battery is 6 volt, 220 Amp hour, Weight less
than 75 pounds... About 1 foot cube last about
2 - 3 days at that rate (100 hours or so.)
Gives you an idea of your trade offs.
Low drop out regulator for 2.5 amps is going to take a heat sink etc etc. This little puppy is power hungry.
RE: How to make a 5 volt battery?
http://www.pacificsites.com/~brooke/BTPS.shtml
http://www.adorama.com/BOY4DC.html
http://
You've hinted that this is an outdoor application. Have you considered powering this puppy with solar cells?