mAh Problem

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silegnav

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I have a C02 monitor which works with 4 AA Alkaline (80 hours). The power requirement is 160mA Peak, 15mA from 6V.

I have fully charged 4 AA rechargeable batteries with 2100mAh each. When I insert the batteries, the device's screen comes to life but after 2 seconds the screen goes off apart the battery indicator indicating no power in the batteries.

I am confused??
 
crutschow said:
You might try NiZn rechargable batteries. Their output is 1.6V.
Click to expand...

If these batteries are 2500 mwh batteries, does mean they are 1562 mah batteries?
I know you're not supposed to mix batteries but you could run 3 ZiNc batteries and 1 NiMh to get 6.0 Volts, I wonder what that would do! Probably work great for 100 hours?
Kinarfi
 
Last edited:
silegnav said:
How can I do that?
Click to expand...

It is a Mechanical Problem, not an Electrical Problem

The problem is not of battery capacity, it is that the terminal voltage of the rechargable batteries is much lower than that of primary Alkaline batteries. The low-voltage detector inside the detector goes off much before the rechargables are used up. You need to satisfy the internal low-voltage detector by raising the battery voltage.

How about power it from a small external 6V Sealed Lead Acid battery like this.
 
sorry i forgot the quote
bad idea, one or three battery will over discharge if using a mix of nimh and zinc
 
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