【4000 mAh LiFePO4 Battery】Rechargeable, battery-powered and portable, Kin features an ultra long-lived 4000 mAh LiFePO4 battery. This oversized, high-capacity battery means longer uses between charges and less time spent plugged in.【Cycle Life】LiFePO4 batteries lasts 2,000–5,000+ recharge cycles (sometimes over 10 years of use) showing excellent long-term durability. This is 5X the life of standard Li-Ion batteries.【Chemistry & Safety】Chemically and thermally mode stable, LiFePO4 batteries are highly resistant to overheating, overcharging, and fire.【Diffuse Shade】With its dome-shaped diffuser, Kin creates a warm glow. The shade diffuses the light and creates a comfortable, relaxing light without the harsh glare. The LED light bulb lasts 10,000 hours and never needs to be replaced.【Over 10,000 Lamps Sold】Trusted by thousands, our Minnesota based company is proud to be breaking new ground in lighting.