[Elecraft] Fwd: Bioenno's July Promotion

[Clay Autery]

Sounds like an engineering challenge to me...  if it hasn't been
answered "open source" before I get to that step, one that I might take
on...  A flexible design that is "quiet" and treat the LiFePO
battery(ies) as they "need" for maximal lifespan, and allowing them to
be used for operation w/ "float", and/or standard charging... CC/CV
charging PLUS.

______________________
Clay Autery, KY5G
MONTAC Enterprises
(318) 518-1389

On 7/11/2016 3:49 PM, Marc Veeneman via Elecraft wrote:
> Actually you can charge and operate at the same time.  Basic charge voltage is 13.2 and finishing voltage is 14.6 volts.  I've never had a problem with any Elecraft (or other) ham gear at either voltage.  
>
> Float charge would work just fine but I wouldn't make a habit of it.  The control modules wired between cells need 14.6 volts (for 4S configurations) to trigger their cell balancing ability.  Lead acid cells balance automatically when in series.  LiFePO4 cells do not.
>
> But beware the charger RFI.  The 10 amp chargers from BioennoPower are strong generators and I can't use them in the shack to recharge either the battery in use or any other battery while I'm on 80 meter CW.  
>
> I'm testing some alternative high amp chargers and have found at least one that is RFI quiet.  I'll be testing a second, less expensive, alternative this week.
> -- Marc