What is the average lifespan of Alkaline batteries in the Radio? I've had mine for 2 weeks, put in over 70 runs and the red indicator is still not blinking and it's still responsive. I threw in some ded rechargeables and the light did blink, so I know thats working. I thought they would have needed replacing at least once by now. I have some rechargables that I will put in eventually. My LHS gave me a 16 pack of Energizers as a freebie when I bought the truck, charger and 6 battery packs. So I'll kill those first. Nothing else in my house uses AA's since I got the power cell for my digi cam.

2. Energizer Max AA is about what, 1150mah, *8=9200mAh...
Current drain on the stock 3channel transmitter is maybe 200mAh...
Let's put average run at maybe 20 minutes, *70=1400minutes, /60≈23.3 hrs

With all things being equal (which is probably not, since you have to account voltage drain as wattage drain increases and the voltage itself goes down):

200x23.3≈4666mAh you used on yer AA's
9200-4666≈4534mAh remaining on yer AA's

I don't know at what point does the transmitter starts blinking (guess u can measure yer batt's total mah when it does), so I don't know when it'll quit. Also, dont take these numbers seriously, as I wont pretend that I know my electronics and math as well as some of the guys here, and there are almost always other factors involved that I probably didn't account for (like diminishing delivery capacity when compared with power drain), or if I should have figured in watt usage.

3. akkk.... too much math for me. During my school days math was my weak point. lol

4. Originally Posted by uNF01
Energizer Max AA is about what, 1150mah, *8=9200mAh...
Current drain on the stock 3channel transmitter is maybe 200mAh...
Let's put average run at maybe 20 minutes, *70=1400minutes, /60≈23.3 hrs
Sorry, it doesn't work that way. The batteries in the transmitter are arranged in series, not in parallel, so the math works as follows:

1150mah 1.5V per cell * 8 cells = 1150mah 12 volts. Current drain should be about a hundred milliamps (not mAh - that's capacity, not current). This means it should last anywhere from 10 to 14 hours, depending. That's a LOT of time, and equivalent to perhaps 50-60 runs. Also, some data I've found indicates that good AA alkalines are 2000mAh plus, which would extend this time to near 20 hours.

5. hehe, it's all good, no worries. i say just note when it dies out and leave it at that =]

6. I use 2650 ma duracell rechargeables. They last for weeks of daily driving. I have a duracell 1/2 charger that holds 4 AA/4 AAA. Great set up.

7. Originally Posted by enforcer
Sorry, it doesn't work that way.
Thanks for pointing that out, learned another thing today =]

8. Originally Posted by 1fast3.3
I use 2650 ma duracell rechargeables.
I upgraded my Duracell 2500s to 2650s and they do not fit in my TQ3. When I try to squeeze in the last cell, one always pops out. I just use a strap to keep the battery cover on.

Now I got my 2500s spread all over the place... 2 in my Maglite, 4 in my camera, and one in my electric tooth brush (the other for back up ) I'm certain everyone out there needed to know this...

Originally Posted by enforcer
1150mah 1.5V per cell * 8 cells = 1150mah 12 volts. Current drain should be about a hundred milliamps (not mAh - that's capacity, not current). This means it should last anywhere from 10 to 14 hours, depending. That's a LOT of time, and equivalent to perhaps 50-60 runs. Also, some data I've found indicates that good AA alkalines are 2000mAh plus, which would extend this time to near 20 hours.
Jeez enforcer, what are you smart or something??? I've always been told to stay in school, but no one said anything about staying awake...

Matthew

9. Yeah they are a bit bigger. I used my dremal to remove some material from the sides of the batterie compartment, works well.

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