mark kirchner Posted March 3, 2020 Report Share Posted March 3, 2020 8 hours ago, Trey LaCroix said: Have you, or anyone, tried an eneloop pro with a single battery SMWB? I’m thinking of getting a couple. Hi Trey, I do not have the single battery model. LTs and SMDWDs only. Quote Link to comment Share on other sites More sharing options...
LarryF Posted March 3, 2020 Report Share Posted March 3, 2020 Hi Mark, You can use just one battery in the SMD and get the same numbers as in the SM. The batteries are in parallel. Best Regards, Larry Fisher Quote Link to comment Share on other sites More sharing options...
Blocktek Posted September 29, 2023 Report Share Posted September 29, 2023 A little late to the party, but I just tested 1x Energizer Lithium vs Eneloop Pro AA in my SMWB. Results: Eneloop Pro: 03:42:30 Energizer Lithium: 05:39:00 Quote Link to comment Share on other sites More sharing options...
LarryF Posted September 30, 2023 Report Share Posted September 30, 2023 18 hours ago, Blocktek said: A little late to the party, but I just tested 1x Energizer Lithium vs Eneloop Pro AA in my SMWB. Results: Eneloop Pro: 03:42:30 Energizer Lithium: 05:39:00 Just double checking: You ran the batteries down until the transmitter died? Best Regards, Larry Fisher Quote Link to comment Share on other sites More sharing options...
Blocktek Posted September 30, 2023 Report Share Posted September 30, 2023 25 minutes ago, LarryF said: Just double checking: You ran the batteries down until the transmitter died? Best Regards, Larry Fisher Yes. I recorded tone with record run TC and checked the file for when the tone stops. On the NiMH, that was confirmed by the timer on the SRc. And I just tested a second Eneloop Pro fresh off the charger and got the same time, within a minute. Louis Quote Link to comment Share on other sites More sharing options...
LarryF Posted October 1, 2023 Report Share Posted October 1, 2023 20 hours ago, Blocktek said: Yes. I recorded tone with record run TC and checked the file for when the tone stops. On the NiMH, that was confirmed by the timer on the SRc. And I just tested a second Eneloop Pro fresh off the charger and got the same time, within a minute. Louis Perfect Quote Link to comment Share on other sites More sharing options...
Paul F Posted October 1, 2023 Report Share Posted October 1, 2023 Most interesting. They are both rated by their respective manufacturers @ 2500mah. But the Energizer lasts 60% longer. That's huge. Nice test Louis. Quote Link to comment Share on other sites More sharing options...
LarryF Posted October 1, 2023 Report Share Posted October 1, 2023 2 hours ago, Paul F said: Most interesting. They are both rated by their respective manufacturers @ 2500mah. But the Energizer lasts 60% longer. That's huge. Nice test Louis. The difference is in initial battery voltage. The lithium is higher voltage so the current draw is lower due to the fact that the power supply in the unit is a switching power supply. Switchers convert power in to power out. So a higher voltage can draw less current for a given power in. For instance, a switching power supply running from a 12 Volt battery could draw 5 Amps and put out 5 Volts at 12 Amps, if it were 100% efficient. 60 Watts in for 60 Watts out. The switchers we employ, are chosen for high efficiency of course. All this to say, if a unit needs 600 milliWatts to operate, that would be 500 mA at 1.2 Volts (NiMh) but only 400 mA at 1.5 Volts (lithium). And all this is complicated by the fact that the lithium starts out at 1.5 Volts and then gradually falls to 1 Volt or less before dying and the NiMh stays at 1.2 Volts until suddenly collapsing. Best Regards, Larry Fisher Quote Link to comment Share on other sites More sharing options...
Johnny Karlsson Posted October 1, 2023 Report Share Posted October 1, 2023 I believe energizer ultimate lithium is rated 3500mAh. (And have become ridiculously expensive). Quote Link to comment Share on other sites More sharing options...
LarryF Posted October 1, 2023 Report Share Posted October 1, 2023 34 minutes ago, Johnny Karlsson said: I believe energizer ultimate lithium is rated 3500mAh. (And have become ridiculously expensive). 3500 mAh is correct Quote Link to comment Share on other sites More sharing options...
Blocktek Posted October 1, 2023 Report Share Posted October 1, 2023 44 minutes ago, Johnny Karlsson said: I believe energizer ultimate lithium is rated 3500mAh. (And have become ridiculously expensive). I decided to test the Eneloop Pros based on an anecdotal recommendation from Gerald Weesner at Lectrosonics. After a weeklong studio gig, my cart was littered with spent Energizer Lithium batteries at $3.00 each. On this job, I was able to pass that cost on to the client, but that isn’t always the case. For studio/stage gigs, the Eneloops will suffice. I’ll have to default to the disposable lithiums for any kind of live or documentary work. I’m still surprised by the lack of battery innovation in the prosumer market, consider the recent advances in car and energy grid solutions. Also, that I have to resort to a “best guess” estimate for transmitter life on set, rather than having a truly accurate meter representation. Even the lithium batteries “lie” on the SRc battery life display; one minute they show 50%, the next they’re at 100%. Louis Quote Link to comment Share on other sites More sharing options...
Philip Perkins Posted October 1, 2023 Report Share Posted October 1, 2023 My tests and anecdotal experience with SM Lectros is pretty much what Louis got. The Eneloops are ok for low key kinds of jobs (interviews etc) with defined time frames, but for live shows w/o breaks or doco I went back to Lithium AAs. The cost is always an interesting conversation with the filmmakers.... Quote Link to comment Share on other sites More sharing options...
Johnny Karlsson Posted October 1, 2023 Report Share Posted October 1, 2023 I have also noticed that the SMV and DBSM will get better run times than the SMWB. One way to get better run times with NIMH is of course to use the dual battery transmitters. In my tests an SMQV will run for about 8h20min with eneloop Pro or IKEA Ladda 2450. Quote Link to comment Share on other sites More sharing options...
Paul F Posted October 1, 2023 Report Share Posted October 1, 2023 I don't know what datasheet I was looking at to get the 2500mah, but I looked again and indeed, it's 3500 mah. Ok, no mystery there. Quote Link to comment Share on other sites More sharing options...
soundtown Posted January 14 Report Share Posted January 14 On 9/29/2023 at 2:33 PM, Blocktek said: A little late to the party, but I just tested 1x Energizer Lithium vs Eneloop Pro AA in my SMWB. Results: Eneloop Pro: 03:42:30 Energizer Lithium: 05:39:00 So , just to be clear, which RF power setting were you on (even though I know its been said "theres an attenuator on the RF output, so the battery drain is the same" Im curious Quote Link to comment Share on other sites More sharing options...
Blocktek Posted January 15 Report Share Posted January 15 On 1/13/2024 at 11:07 PM, soundtown said: So , just to be clear, which RF power setting were you on (even though I know its been said "theres an attenuator on the RF output, so the battery drain is the same" Im curious 100 mW. Quote Link to comment Share on other sites More sharing options...
soundtown Posted January 15 Report Share Posted January 15 1 hour ago, Blocktek said: 100 mW. those runtimes are not too bad , but so many others have stated the opposite in regards to the single battery Tx that I'm shying away from them. Quote Link to comment Share on other sites More sharing options...
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