Tír Na HiFi

jkeny wrote: ↑Sat May 20, 2017 12:41 am

nige2000 wrote: ↑Sat May 20, 2017 12:30 am just discharging the cells the fun way :)

You have now welded that nut onto its terminal - just sayin :)

At least it's a pair of welds to even things up!

https://www.ev-power.eu/LTO-Tech/ confirms what you say, but not a direct comparison with A123 26650 LiFe which have patented nano crystal anodes. The effect and benefit of this alteration and inclusion of lithium-titanate nanocrystals is that the surface area of the anode of the Lithium-Titanate b...

Yep. But EV Power do ship Class 9 'normally' and cost is here - https://www.ev-power.eu/Frequently-asked-questions-1/?cl=transpadr_pricelist Still expensive. But I wonder if the technology is worth the money. The specs would suggest it was. If I had a requirement for a 5V PSU, I would give it a go, ...

As this is the place for cutting edge battery PSU discussion, has anyone tried Lithium Titanate batteries? For 5V battery PSU, I am a little wary of float charging LiFePO4 at 2.5v, which is really near the bottom of their recommended working range. Apart from the obvious danger of running them down ...

Interesting discussion. I suppose that in my case, I started off with all the cells within 0.01V of each other and I always have the float charger turned on, even before I fire up the PC, and so they never get a chance to discharge below 3V. So the perfectly benign environment for keeping in balance...

No sign of imbalance after several months here!

If one had to balance them manually every year or so, I can live with that.

sima - that's good to hear. I have also found that my surplus A123 26650 batteries sitting in a cool room keep charged up for months at a time without aparent discharge. They are truly superb batteries and well above most others. I tried to find what current draw your RR-777 takes and found this quo...

Hi sima66 That pack would do the job and is very convenient. But it certainly isn't going to give you the best SQ. I have been there too! These packs and also the ones sold as mobile phone chargers, usually contain less than optimum batteries inside, may be LiPo and not LiFePO4 and certainly not up ...

But if there's no difference in sound when the charger is disconnected during listening then it's a non-issue - it's very dependent on the rest of the audio chain & whether there are ground loops in this BTW, it's not "mains noise"as such. The ground reference of all devices in an aud...

Where float charging of say LiFe batteries is required (most applications), instead of polluting the batteries with a mains PSU, has anyone tried float charging them with a 12V car battery? Cheap(ish) solution and easy to charge the car battery offline and with say a standard 40-50AH capacity batter...