Talentcell 12V LiFePO4 Battery Pack LF4106, 2000 Cycles Rechargeable 12.8V 6Ah 76.8Wh Lithium Iron Phosphate Battery with DC 12/9/6 Volt and 5V USB Output for LED Strip, CCTV Camera, Mobile and More

I have it strapped to a tripod leg of my telescope. So far, it runs the mount just fine. After about an hour of off and on slewing the telescope, the meter still showed a full charge. The only negative so far was that I had to separately order a power cable; it came with 3 short cables and none of them were the right ones for my set up. I like the feel of this unit, it seems to be well-built. Reviews were positive. This replaces a Celestron PowerTank.UPDATE AFTER ABOUT 5 MONTHS OF USE: it's still working like new. It powers my Celestron AVX mount with C9.5 OTA, Starsense AutoAlign, GPS...it all works well. I have a cheap dew heater strip which I tried and saw the Talentcell meter drop to about half, so I unplugged the heater. I haven't needed the heater (I'm in S. FL), my dew shield has been enough, so if I need to use the heater strip, I have a large battery I would use, not the Talentcell. UPDATE AT 10 MONTHS: still working like a champ. The AVX mount likes it, but an Ioptron Cube2 mount I just got (used) works ok with it but the power light blinks, so, since it works ok, maybe the output is not exactly what the Ioptron "likes". (I have no idea)

I did purchase two of these LF4106s and tested both with a 1 Amp constant current load. Mine started out at about 13.6V (under load) and ended up at about 11.9V right before the internal BMS cut off the output. After one charge cycle, both supplied a little over 6 Ah. I like that a lot, actual truthful, capacity rating. I use mine to mostly power portable ham radio gear. I do have one transmitter that I often operate a 20 watts without any problems with this battery. This will also provide consistent power for the same transmitter at 30 Watts, I just choose not to operate at the upper limits ;) I also own some of the older models of this, all of which have been working flawlessly for over the past 5 years. There are pluses and minuses to LiFePO4 batteries. I do like the extended cycle life as compared to the regular lithium ion type. The USB and other outputs are just another plus. I would recommend this LF4106 as a reliable power source to any one.

I bought 2 of them. I'm a techie and have found several uses with more on the way. The fact that they provide 12/9/6 volts just adds to their versatility. I especially like that they are not dangerous like a Li-Po. One note: even though they come with special LiFePO charger wall warts, I bought a charger that charges faster AND can be used on other 4cell LiFePO batteries. It is here on Amazon:https://www.amazon.com/dp/B08MPX414R?psc=1&ref=ppx_yo2ov_dt_b_product_detailsULTRAPOWER 4Amp 12.8V-14.6V Lithium LifePO4 Battery Charger,4-Stage Automatic Repair Intelligent Lithium Battery Charger for Cars,Motorcycles,Lawn Mowers,Toy Cars,Golf Carts,LifePO4 Batteries.Several people have asked this question: "Can you charge it from your car's 12v Battery?" ABSOLUTELY NOT! You MUST use a CHARGER that's SPECIFICALLY designed for FOUR cell LiFePO batteries with a output no higher than FOUR amps. Using anything else would be VERY bad.WHAT ABOUT A INVERTER? Can I plug the charger into one and make it work that way? YES, but...The smallest Pure-Sine Inverter I found on Amazon is 150W:https://www.amazon.com/Krieger-Inverter-Charge-Outlet-Included/dp/B09ZVDXW3TFirst, DO NOT try to use your cigarette lighter socket, it will not SAFELY provide the amount of power. This needs to be connected AT THE BATTERY. 150W at 12v is 12.5 AMPS, but it will be more like 16 ish OR MORE due to circuit losses, battery voltage, and overall device inefficiency.Consult a Automotive Electric shop or RV repair place. They can help, But remember, if you value you electronic devices ONLY use a PURE sine-wave inverter. Why? Look up "Power Factor Correction"Under the right set of circumstances you can IMMEDIATELY smoke your device AND the inverter. YIKES!THOSE shops may NOT understand PFC circuits and THAT COULD COST YOU. :-(ONLY BUY a PURE-SINE, PERIOD.As always, Hope this helps you.