Compatible With Batteries: ZQ520, ZQ521, QLN320, QLN220, QLn220HC, ZR628, ZR638, ZR658, ZR668, ZQ610, ZQ620, ZQ500, ZQ510, QLn320HC Printer
Battery model: P1031365-025, P1023901, P1023901-LF, AT16004, P1051378, P1031365-069, BTRY-MPP-34MA1-01, BTRY-MPP-34MAHC1-01, P1031365-059
Specification: Voltage:7.4 V; Type:Li-ion; Capacity:3400 mAh/25.16 Wh; Size:113.35 x 38.15 x 40.76 mm; Weight:135 g
Quality Certification: ROSH, CE and UL triple certification. No memory effect, over-charge, over-discharge, over-heat, over-current and short-circuit protection
If your wireless device's cruising time is significantly reduced, you should replace the battery.