Review on Rechargeable 12V 11000MAh 9V 14500MAh 5V 26400MAh DC Output Lithium-Ion Battery Pack For LED Strip, CCTV Camera, Portable Li-Ion Power Bank With AC/DC Charger - Black by Bill Roberts

This is my 2nd 12V/11000mAh Talentcell. The first one is working so well that I purchased another to daisy chain them together for longer battery life of my project. Yes you can use a splitter cable to connect both 12V ports together. They will connect in parallel meaning your voltage stays at 12V. They do NOT daisy chain in series (making it 24V). This is the way it should be. We can all purchase multiple of these power packs and add more battery life to our projects. Same applies for the 9V ports. They can be daisy chained in parallel yey!Note: do not ever daisy chain the 12V to the 9V in parallel that wouldn't be smart. The plugs are different and won't allow you to anyway. I accidentally over amped it on multiple occasions and it immediately shuts off. Turn the power off then on and it comes right back to life. Excellent electronics design. The case looks a bit home-made but trust me, this is the best power bank on the market.I wish it had a dedicated 12V input port on the back instead of sharing one with the 12V output. It makes my project look like a spaghetti monster of cables with the splitters. Also I wish there was a much larger 12S, 14S, 16S, or 18S model to choose from. I now have 2 of these so I have 18 cells. Had they offered an 18 cell version (preferably in the same 2 row configuration just longer) I would have purchased that to begin with for a monster 22000mAh power bank.I can now run my project (super low power Intel Compute Stick laptop avg 130mA) for 48 hours continuously. It can be considered similar to a Raspberry Pi laptop (PiTop). Think about that. when is the last time you heard of someone being able to use their laptop for 2 days straight on a single charge? Probably never. Great power bank. So impressed with it I came back for a 2nd.