battery meter

A couple of questions:

• By "battery meter", are you referring to a voltmeter, a current meter, or a meter which determines % charge/discharge?

• What kind of battery do you have? How are you charging it?

• By "show reading on LEDs at alltimes", are you referring to a string of individual LEDs or a numeric LED display?

Cheers Chris

Try one of these:

Regards, Bob Monsen

ged by

oad is

hi well i have decided to make a volt meter, please comment whether its a good choice or not, and the LEDs are string.. not numeric. one other option that i have concidered is that to get a little current from the battery via a big resistance . the current will then be givven into A2D converter and the output can be obtained in numeric display. but is this approach OK? would the current become weak with the battery cosumption, keeping in mind that the current is initially very less

arged by

load is

and yes, the battery is being charged primarily by a solar pannel and if the battery is not charged properly, its is then charged from the main lines, and this battery meter that im refering to is going to help me switch between both the supplies

I have a circuit that I have built many times for car/boat use. Ignition on [engine running] = charge voltage, ignition off = battery voltage. Power comes from battery. Depending on LED brightness power consumption can be very low. The one I have in car now, uses 10ma. and measures 10-15 volts. And is extremely accurate, I might add!

As I understand your question, solar power will be applied to battery at all times. If that's the case, the meter would always read charge voltage except at night when output is reduced, or if the load requires high amperage.

Cost should be less than $10.00 even with all new parts. [And two evenings]

I'm assuming this is for 12v battery, but circuit would work with 6v battery too.

I'll answer ? here, or give me a snail mail address and I'll send schematic and instructions.

tj tsj1212 AT yahoo Dot com

Have Fun! Rich