Fangrui Product Details Remind: The Current Main Board Have A Charging Time Detection, 6-7 Hours Unfinished Charge Prompt When The Battery Is Unusual, The Default Of Slow Filling Is Suitable For The Battery Within 8 Ah, Quick Charge Instead Of Jump Line For Fit Within 15 Ah Battery, If You Want To With Larger Capacity Batteries Need To Change The Timing Circuit, The Batch Can Be Customized Support 20 Or More Ah Pay Attention To: The Change Is Only The Charging Timeout Time Threshold, Has To Do With The Charging Speed! High Power Ups Uninterruptible Power Motherboards Developed For 12v 1.5a Routers Or Light Cats Can Also Be Used For 12v 1a Equipment! Charging, Need The Minimum Input 5v, 0.5 0.6a Charging Current Default Dont Have To Change The Customers Original-charger, Otherwise Jump Line Can Improve The Charging Speed, If The Charge Is To Accelerate The Customer Original-power Supply Must Be Replaced And Prevent Potential Safety Hazard, Must Be At Least Double The Power Can Such As Customer Is Using A 12v 1.5a Power Supply, I