Building Electronics Rechargable Battery

enough light to last for the night... im hoping the rechargable  battery can last for the whole year

I have a LiFePO4 100Ah battery that I use for some portable operations in the field. If I happen to have AC power then I can plug it in to this unit and turn it into a 12.6 VDC power supply. If I need to I can use it to recharge my battery. TRYING TO USE A BATTERY CHARGER TO POWER YOUR ELECTRONICS CAN EASILY KILL YOUR ELECTRONICS. Most electronics do not like voltage over 15 v and many chargers will start out at 16-18v and will fry your electronics so this device has a specific power supply mode at a steady 12.6V. Perfect.

Really cool rechargable battery, love that the USB charge port is directly on the battery! No extra gear required!

One of the most strong light . With extra rechargable battery. And can use it , like power bank 4000 mAh for cellphone. Looks like xp11r model. They are my good helper .

Love the fact I can use a regular Battery when the rechargable is dead,Great size for my tent -Gets the job done and VERY packable

I got this 2 rechargable battery with charger set for my Sekonic L-758DR meter. I probably never have to buy a battery for it again, at least not for a very long time. It is affordable and environmentally friendly.

Hands down with out a doubt the greatest head lamps on the market. The rechargable battery life is absolutely outstanding. I had to buy my self a second one and one for my family members.

The Vidpro, dimmable, LED sungun comes with a rechargable battery but can also be powered with 5 AA batteries. The batteries last a long time as LED lights are low power consumers. It is daylight balanced and has a magnetic attaching warming filter and diffusion filter. The magnets are strong and the filter stays in place with rough use. Love it!

very powerful worklight, easy to carry, rechargable with long battery life. Excellent for working, having on your car for emergency such as changing a tire. Great for camping ansd iluminating large areas for setting up.

Since i charged up my scope, i use it 4 times for approximately 3 hours each, and the scope still runs smoothly. With rechargable battery i get 3hrs smooth running before battery starts dying on me. Besides eyepieces best accessory for your scope. I like that it not only power but have all the other features that are quite useful, flashlights etc.