I recommend looking into so called Super Capacitors or Ultra Capacitors. They are widely used where a quick and high initial load (power)is required. AFAIK sup

I recommend looking into so called Super Capacitors or Ultra Capacitors. They are widely used where a quick and high initial load (power)is required. AFAIK super capacitors are used for backup power systems and electric car batteries. I think I hear that Tesla battery packs have super capacitors to protect those Litium cells from getting damaged during short high load needs. I am currently planning a small hobby project where I want to build a small autonomous sensor station using ESP32 and LORA, powered with solar cells using super capacitors as energy buffer charged through a buck boost converter with simple MPPT functionality. A protection circuit in front of you appliance is mandatory since super capacitors can unleash high loads for a short period of time. I use here a second buck-boost converter which outputs constantly 3.3 volts for the ESP32 board and sensors.