S9 L3+ RT8537 Boost Module Board Repair Power Boost Board 2A 3.7-5V to 14.2V

The circuit conversion efficiency is high. When the efficiency is high it exceeds 90%. The efficiency of a single-cell lithium battery is also 80%. Unlike some of the the efficiency is only 60-70%. Input low power reverse connection protection if your battery has a 2A protection board the protection board will protect when the positive and negative poles of the input power supply are reversed. Note that when there is no protection board or the input current is 2A the input reverse connection protection It will fail and cause damage to the module . Low quiescent current the new version the quiescent current will be less than 100 microamperes. No switch is required to connect to the battery. Material:pcb colour:green Package Contents: 1 * boost module Only the above package content other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.