Christy L Manoppo (okky) wrote on Sun, 18 July 2010 23:27 |
we currently use energizer rechargeables for all of our wireless mics, senn ew500g3 and shure's UR. So far, 6hrs plus of use every sunday, we don't encounter any problem yet. also, the battery life depends on some factors; - transmitter power level (most says 10mW, 50mW) - recharging habits. (make sure it discharge completely before any recharging cycle begins). |
Darin Brunet wrote on Sun, 18 July 2010 22:43 |
BTW, since I remote mount my receivers, the transmitters only go for about 15-20 ft. YMMV. |
Jonathan Johnson wrote on Mon, 19 July 2010 01:21 | ||
Transmitter-to-receiver distance doesn't directly influence battery life, but I suppose that a weak battery would be more usable if the distance was short -- on an analog-tuned transmitter. If your transmitter uses digital tuning, chances are good the unit will shut off when the voltage drops below the level necessary to operate the chips, and you won't notice much of a difference at all in transmission distance. Those same batteries that are too weak to operate the digital-tuning transmitter just might work OK for a while longer in an analog-tuning transmitter. If the transmitter allows you to adjust the RF power output, you may be able to optimize the battery life. |
Darin Brunet wrote on Mon, 19 July 2010 03:43 |
BTW, since I remote mount my receivers, the transmitters only go for about 15-20 ft. YMMV. |
Darin Brunet |
There is no need to completely deplete an NiMH battery before recharging. NiMH batteries do not have the "memory" that older NiCD batteries did. From Energizer: Battery "memory" is a loss of battery capacity due to partially discharging and recharging repetitively without the benefit of a full discharge. This was evident with early nickel cadmium (NiCd) rechargeable batteries and is not found in nickel metal hydride batteries (NiMH) currently manufactured. I continually charge and recharge the NiMH batteries in my DSLR cameras, cell phones, AA & AAA's and have never had a problem. ~DB |
Arnold B. Krueger wrote on Mon, 19 July 2010 06:10 | ||
I was forced to do that with our previous Samson UHF diversity system. They all became illegal, and we replaced them with Shure SLX and AT 3000-based systems. Remote mounting receivers is pretty nasty because you lose so much feedback about how the link is running. It eliminates the benefits of remote battery status indicators. In retrospect, the lack of frequency agility was the probable cause of the range related problems that we had with the Samsons. Of course both of the new systems are frequency agile. I've been able to simulate the same symptoms we had with the Samsons by picking the wrong frequencies with the new ATs. The Shures are self-setting, and never seem to put themselves onto troublesome frequencies. Getting back to batteries, we've never risked rechargables. The improved battery life with the new equipment, and the switch to AAs is a tremendous benefit. |
Christy L Manoppo (okky) wrote on Mon, 19 July 2010 23:35 | ||
Yes. Thanks Darin for pointing that out. But this is just a matter of habit of mine. The only problem we encounter when using rechargeables is, they have a steeper voltage loss curve when they already spent all their "energy". Unlike alkalines, which seems to have a broader curve. cmiiw |
Shawn Lockwood wrote on Thu, 29 July 2010 20:25 |
I hope my experience with the above will help with the use of rechargeables/alkaline batteries. I sure wish that rechargeables were reliable and long-lasting. It would help my budget a lot. |