Harry I use the Batteryspace charger recommended for that pack and simply plug it into the radio. I had to select the model with the right plug to match the rig. I flip the battery switch on the K2 'on' for charging. The charger shuts itself off when done. No radio alterations or anything else are needed. I did not want to drill holes or add switches. I do *not* operate the radio while it is charging, although doing so won't cause any damage. The charger is a switching supply and is RF noisy. The LiFePO4 pack provides 2x to 3x the portable run time that the gel cell did. The new pack also appears to have a lower self discharge rate. I can go months after a full charge. For use while at a fixed location I have a RF quiet power supply from Pro Audio Engineering <https://proaudioeng.com/products/pae-kx33-low-rfi-ac-power-supply/>. This power supply does not charge the battery, so, you just flip the battery switch off. Oh, I should mention, the new LiFePO4 pack is designed specifically to fit inside the Elecraft bracket that comes as part of the internal battery kit. Since I already had that internal battery it was easy to change it out. If you are doing this from scratch maybe Elecraft will sell you just the bracket and switch (the kit less the gel cell and wiring which are part of the internal kit). If you accidentally leave on the 'regular' power while the battery switch is on, the battery will not charge fully.
Steve KZ1X ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
