Sig Kilo 3K Rangefinder Issues

[TMac60]

Anyone else have battery and other issues with their Kilo 3k? Bought my first one from Amazon last summer, battery wouldn't last more than 30 minutes and wouldn't provide range except rarely. Went through diagnostics with Sig, they had me send it back and gave me a new one. Same issue so they sent me a third one. Have only used it one time at the range to zero my rifle a few months ago but pulled it out getting ready for a Spring bear hunt in a few weeks. Battery was dead, new battery lasted about 15 minutes. Tried 5 different batteries (all new) and it says zero charge on battery, (which is incorrect because some of them are rechargeable and I charged them to test on the Kilo). Called Sig, they said the last two I sent in were fine and they had none in stock to send me. Meanwhile, I've never been able to use the Kilo 3k on a hunt and looks like I won't be able to now. Bummer is I invested in the whole SIG BDX system (scope, etc.) which leaves me SOL for my hunt basically. Any one else have these issues? I feel f***ed by SIG.