Features: Brand Adopts super capacitor to provide stable and reliable protection Protects battery from overcharge, overdischarge, and short circuit With balance function to prolong battery life Gone through load and aging tests for quality assurance Small volume, easy to mount Specification: Maximum charge voltage: 3 V (monomer) Maximum charge current (A): Unrestricted (this current is related to the discharge current of the super capacitor) Maximum discharge current (A): Unrestricted (this current is related to the discharge current of the super capacitor) Minimum discharge voltage: 0.1 V Monomer balance starting voltage: 2.65 V Voltage balance error start: ±0.25% Single balanced start indication: Red LED lamps Current balance per monomer: Less than 1A Internal DC resistance: 8 mΩ Operating temperature range: -40 to 85 °C Storage temperature range: -40 to 85 °C 5 string: 360F, 400F, 500F, 650F, 700F Color: Green + Black Size: Approx. 231 x 36 mm (9.09 x 1.42 in) Quantity: 1 piece Note: Transition: 1 cm = 10 mm = 0.39 inch No retail packaging Please allow 1-3 cm error due to manual measurement. Please ensure you are comfortable with this before purchasing Due to differences between monitors, the picture may not reflect the actual color of the item Package includes: 1 x Capacitor Balance Board (other accessories shown in the picture are not included)