Portable Built-in 4000mAh Rechargeable Battery Design: The device can be used for 120 minutes after full charge and supports simultaneous charging and discharging, which can be charged from 0% to 80% in 100 minutes Portable Water Heater For Camping: The camping propane water heater can provide you with easy access to hot water for cleaning, washing dishes and showering. It has a maximum thermal efficiency power of 20,000 BTUs and is capable of a rapid temperature rise of 45℉(25°C). Gas Consumption: 20MJ/h, Water Flow: 2.2-3L/min Type of Gas You Need To Use: The GPT3U portable camping water heater uses a 1 lb (453 g) propane tank. After the cylinder is installed to the water heater, it must be checked for gas leaks. Start the propane camping water heater only after you are sure there is no gas leak. Steady Temperature: This device uses the latest smart chip technology for constant temperature control. You can enjoy a stable water temperature, eliminate unexpected fluctuations, and bring you a more comfortable bathing experience. At the same time, it can be adapted to various outdoor needs, whether you need to wash dishes, wash hands, showering, or pet cleaning, you can get a fresh and clean outdoor experience without any constraints Multi-Protections For Added Safety: 1.When the water temperature reaches 122°F, the device will stop supplying water and turn on automatic protection; 2.If the pump does not sense the flow of water for more than 120 seconds, the water heater will automatically shut down; 3.When the equipment tilt Angle is too large, the flame will be automatically turned off. If the preceding situation occurs, check the device status and restart the device Durable & Weather-Resistant: Built to withstand outdoor conditions, this portable water heater is durable, weather-resistant, and ready for your next adventure. About After-sales: WINTEMP provides hassle-free after-sales service, please contact us if you have any questions. NOTE: This product is for outdoor use only. 2 years warranty period. *No Standalone lithium batteries are sold with the product* Wintemp Portable Propane Water Heater with Showerhead Pump, Perfect for camping, RV trips, beach outings, and even emergency use, this water heater is a must-have for anyone who enjoys the outdoors but doesn’t want to compromise on comfort. Get the convenience of hot water without the hassle of bulky equipment or finding a power outlet! There are no complicated installation steps, bulit-in rechargeabe system just connect a water source and a 1-pound propane tank then you can use it so easy!