Battery Parameters K0257, 55111-05, 5800RP Wireless, 5800RP Wireless Repeater Compatible Battery Part Number: 55111-05, GP80AAAH5B3BMX, K0257 Specifications: Voltage:6V Capacity: 700mAh / 4.20Wh Size: 51.50 x 45.20 x 10.90mm Type:Ni-MH Weight:85g/3oz Friendly Reminder After the battery is placed for a period of time, it enters a dormant state, and the capacity is lower than normal. Multiple normal charge and discharge cycles are required to activate the battery and restore normal capacity. Installation Tips If you want to make replacing your battery easier, we highly recommend watching this battery replacement video on YouTube. Novices can easily install, no need to worry about the installation is too complicated. Tips Before Purchase Please double confirm the compatible model and original battery part number before you purchase it.(You can quickly search with Ctrl+F).If you are not sure,please feel free to send email to us with your battery details or pictures, we will give you free professional suggestion.Your satisfaction is very important to us,if you have any questions,Please feel free to send eamil contact us,and we will reply within 24 hours.After-sales Service : 12 month Warranty and 14 day Money Back Guarantee. Your satisfaction is important to us, please feel free to contact us with any question, 24*7 Email support. Quality Certification : ROSH, CE and UL triple certification. No memory effect, over-charge, over-discharge, over-heat, over-current and short-circuit protection. High capacity circulation function, perfect replace your original batteries. Prompt Before Use : When the new battery is used for the first time, it is in the protected state and requires a long time to charge and activate, Please wait patiently!If it is not fully charged and activated, the battery may not work or the running time is short. Battery Specification : Voltage:6V, Capacity:700mAh/4.2Wh, Size:51.50 x 45.20 x 10.90mm, Weight:85g/3oz. Perfectly Compatible : Suitable for K0257, 55111-05, 5800RP Wireless, 5800RP Wireless Repeater.