osa Posted March 28, 2014 Report Share Posted March 28, 2014 I have 3x idx L7s's that i use with my 664 regularly. 2 are on the older side and 1 is relatively newer. I use an older 4 bank lithium charger with them that i bought off of ebay close to 10 years ago. On all 3 no matter how old i average 15.5 volts when fully charged. A friend of mine in town with basically the same rig says his batts, although newer, average 18 volts and he never has to change even on long days. On a similar long day i might go close to burning through all 3. Is simply buying new batteries the right move or is it possible my charger is not up to snuff for these batts and maybe a new charger is in order? Ken P Quote Link to comment Share on other sites More sharing options...
Jack Norflus Posted March 28, 2014 Report Share Posted March 28, 2014 I have never seen my newish L7s read 18 volts right off charge. I usually see around 15.8 or so. Quote Link to comment Share on other sites More sharing options...
ProSound Posted March 28, 2014 Report Share Posted March 28, 2014 Hot off the charger between 15.6-16.0 is where I see mine so 15.8 is about right Quote Link to comment Share on other sites More sharing options...
chrisnewton Posted March 28, 2014 Report Share Posted March 28, 2014 same her. 16 is the highest I've seen. Quote Link to comment Share on other sites More sharing options...
rich Posted March 28, 2014 Report Share Posted March 28, 2014 have you seen your friends rig / batteries / voltage reading yourself? Quote Link to comment Share on other sites More sharing options...
Max Hirtenstein Posted March 28, 2014 Report Share Posted March 28, 2014 i have 4 brand new np's and the kl-4 charger. i get up to 16.3 volts. Quote Link to comment Share on other sites More sharing options...
osa Posted March 28, 2014 Author Report Share Posted March 28, 2014 Thanks guys for the replies. No one else that i cross paths with in town has anything that reads voltage, other thank this particular mixer. I will check his rig with my own eyes next time i see him. Bottom line is glad i am all good - thanks a ton! Ken Quote Link to comment Share on other sites More sharing options...
osa Posted March 28, 2014 Author Report Share Posted March 28, 2014 He prob meant 16v when he said 18v is my guess Ken Quote Link to comment Share on other sites More sharing options...
rich Posted March 28, 2014 Report Share Posted March 28, 2014 bear in mind that 18v is the maximum input voltage for much of our current gear. and some manufacturers who i have spoken to about this have pretty much said 18.1v will toast the power supplies for the gear. that said, i got hold of an 18v mains power supply for my hawk-woods APD-1 which puts out 17.2v under load - and didnt manage to blow any of my gear up. Quote Link to comment Share on other sites More sharing options...
IDX TEK Posted March 28, 2014 Report Share Posted March 28, 2014 Hi Ken, New NP-L7S batteries can be as high as 16.8V hot off the charger. Some people here are saying lower voltages, but they may be reading voltage while the battery is under a load. If your batteries are only charging to 15.5V, there may be an issue with your charger or the battery’s cells have started to deteriorate. If you have the serial numbers available, I can check the age of your gear. If you’d like us to evaluate your batteries or charger, please contact us at service.usa@idx.tv . Thanks! Quote Link to comment Share on other sites More sharing options...
studiomprd Posted March 31, 2014 Report Share Posted March 31, 2014 as always, the place to go for the correct answers... Quote Link to comment Share on other sites More sharing options...
John Blankenship Posted April 1, 2014 Report Share Posted April 1, 2014 as always, the place to go for the correct answers... Yep. Right here on JWSound. Quote Link to comment Share on other sites More sharing options...
dominiquegreffard Posted April 1, 2014 Report Share Posted April 1, 2014 Hi Ken, New NP-L7S batteries can be as high as 16.8V hot off the charger. Some people here are saying lower voltages, but they may be reading voltage while the battery is under a load. If your batteries are only charging to 15.5V, there may be an issue with your charger or the battery’s cells have started to deteriorate. If you have the serial numbers available, I can check the age of your gear. If you’d like us to evaluate your batteries or charger, please contact us at service.usa@idx.tv . Thanks! Could i evaluate myself where are now my lp7's in their lifespam by a test (other than let's say a duration test..)? If the cells are too old can a battery get "re-celled" by idx if there is such a thing? I could just email you but i'm sure others would like to know too. Quote Link to comment Share on other sites More sharing options...
IDX TEK Posted April 1, 2014 Report Share Posted April 1, 2014 Could i evaluate myself where are now my lp7's in their lifespam by a test (other than let's say a duration test..)? If the cells are too old can a battery get "re-celled" by idx if there is such a thing? I could just email you but i'm sure others would like to know too. Hi Dominiquegreffard, The best and most accurate way of testing a battery’s capacity is by discharging it with a constant load and measuring the time it takes to discharge the battery to its end point (11-12V). For example, let’s say you are able to run a mixer that consumes 20W for 3 hours with a NP-L7S. This tells us that the battery capacity is approximately 60Wh, 88% of its original 68Wh capacity. IDX does not offer re-celling. We mainly do not offer this service because it requires the protection circuitry to be reused. Using old/aged protection circuitry reduces the level of safety and is potentially hazardous. If you are not able to evaluate your batteries, we can test/evaluate your batteries for $30 a unit. I hope this info is helpful. Let me know if you have questions. Thanks! Quote Link to comment Share on other sites More sharing options...
osa Posted April 10, 2014 Author Report Share Posted April 10, 2014 Hey guys, working on a job with my friend in question. We were staggered and I had to jump in on his rig while he went to lunch. I had my own np1 lith in my back pocket and figured perfect time to test. I made sure his dc ref was set to 14-L ion. Dropped my batt in and sure enough he wasnt all the way crazy. It showed 18.2v on 664 but 16v on an sr. The sr reading is what my bag, both 664 and sr's, would normally read with this brand new batt i just bought. Its almost as if his mixer is 2v off on the readout. Does his bds v4 have anything to do with it? Mine is older vers 3 i believe. My old method with. 442 and 552 rigs was to get my voltage off of lectro receivers. Other than that my power knowledge is minimal. To think i just thought my fellow mixer friend was nuts all this time. Now i owe hime a beer. Bottom line, my batts are all ok. My charger is ok. Ken P Quote Link to comment Share on other sites More sharing options...
studiomprd Posted April 12, 2014 Report Share Posted April 12, 2014 osa: " To think i just thought my fellow mixer friend was nuts all this time. " troubleshooting 101 Quote Link to comment Share on other sites More sharing options...
osa Posted April 13, 2014 Author Report Share Posted April 13, 2014 Busted! I would love to troubleshoot his rig but i didnt get a chance to. Maybe next time i see him i can check it out thorough and report back Ken Quote Link to comment Share on other sites More sharing options...
Johnny Karlsson Posted April 13, 2014 Report Share Posted April 13, 2014 Seems the 664 voltage readings may not be 100% consistent between units, and therefore perhaps inaccurate? In my case, my 411s and 211s all roughly read the same, within 0.1-0.2v, but the 664 is showing about a full volt lower than the Lectros. Quote Link to comment Share on other sites More sharing options...
studiomprd Posted April 13, 2014 Report Share Posted April 13, 2014 JK: " 664 voltage readings may not be 100% consistent between units, " perhaps you should mention this to SD, perhaps on their users forum, or by email, or even (gasp!) telephone... Quote Link to comment Share on other sites More sharing options...
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