Ridiculously complicated design for just a taillight

oh man! moon coming out to shine tonight!! ...i've been hunting for a type c rechargeable tail light w/ an awesome battery life and easy operation thats controlled using large buttons!! ...and i think/hope i've found it!! ...Cerberus!! ...wuz hoping to finda link to purchase onea these beauty's but alas, i found not!.... so i'z gonna go check arnd the web n see abt finding one sumwhere online! ...and any tips ticks or leads to assist me in rounding this bad ass Moon product pleeaassee help me out!! thnx, Kick

Nice Look. Which one is "day option"?(150lumens and last long time)

Hello! I recently bought a Moon MX front with Cerberus rear light set, and after a fully charging time (both front and rear stopped blinking) I am able to use them in synchro mode by double clicking on the front top button to start, and long pressing on the front top button to stop. However, after couple of days, with bike sitting in the garage only (weather not good enough for outdoor riding yet!), only the front light starts back when double clicking. The Cerberus only is dead flat. If I plug it in, it starts charging and works OK again after, but in a few days it runs empty again, just by sitting in the garage. I received the package in good shape, there were no damages or any signs that might point to prior usage, whatsoever. What is to be done? Thank you!

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