[Elecraft] Replacing the Lead acid shell inside K2 with Li-Po cells

[Don Wilhelm]

Johnny,

Take a look at my website article to see how I connected a SmartCharger 
to the K2 internal battery.
See www.w3fpr.com.
True, the battery and charger are different, but the concept is the 
same.  The battery connection should be fused for safety.

73,
Don W3FPR

Johnny Siu wrote:
> Hello Group,
>
> 3.7v 3300mAH Li-Po cells are cheaply available locally.  Multifunction balance intelligent chargers are cheap as well.  I am seriously thinking of replacing the lead acid cell inside the KBT2 with 3 x 3.7v Li-Po cells.
>
> However, charging of the Li-Po cells requires multifunction charger.  The existing battery circuity inside K2 seems not fit for this purpose.  A direct connection to the battery terminals is required.
>
> I would be grateful if any of you could advise me the 'do' and 'don't' that I should pay attention to.
>
> With the Li-Po cells installed, the weight of K2 QRP will be much reduced with more battery capacity.  K2 is even more suitable for ARES purposes.
>
> Looking forward to your advice.
>
> TNX & 73
>
> Johnny VR2XMC
>   
>