HA! Take that you costly 9v alkalines!

[Monkeywrangler22]

Yes, after verifying you CAN use a rechargeable 9v in the Cibola, I went to my favorite battery supplier and ordered a 4pack of 9v NiMh's (Tenergy 260 MaH). I had previously tried this with an OLD 9vNiMh I had, and got a very low battery beep response, even when fresh off the charger. But I use 9v at times anyway, so I popped a new one on the charger and 14hrs later (yeah slow charge on 9v), it was done. I installed it, and voila! More battery beeps at startup than I remember hearing even with alkalines! I ran it the other night and it worked fine. I also charged up a spare to carry with, and since I hunt enough to go through 1-2 batteries every 2 wks, I should not have to deal with any self-discharge issues.

Now, 'normal' 9v batteries are generally not really 9v. And rechargeables run as 8.4v, but they work fine. However I did get one 9.6v NiMh to try, but it is slightly larger in dimension, so may not fit in all applications. Haven't charged it yet, so I don't know if it will fit in the Cib or not. I may even send it back since the regular 8.4v ones work so well. NiMh has a good discharge curve so the power out to the unit should be stable.

Maybe Tesoro could put a little digital regulator circuit in there, to maintain a constant voltage to the unit until the battery drops below minimum voltage? LED flashlights (good ones anyway) do this all the time and it dramatically improves runtime at high output settings.

 

[Desert_Rat]

Been using these for a while in my detectors.

http://www.ipowerus.com/Products/DC9V520pro/DC9V520pro.htm

 

[Willee - Texas]

Maybe Tesoro could put a little digital regulator circuit in there, to maintain a constant voltage to the unit until the battery drops below minimum voltage? LED flashlights (good ones anyway) do this all the time and it dramatically improves run time at high output settings.

I think that Tesoro and most others as well do have a voltage regulator circuit that regulates the voltage lower than 9vdc for longer battery life.

I do know that there are circuits available that will regulate the output voltage to 9vdc even when the battery voltage is below 8vdc.

Willee