5PCS Upgraded KNB-16 / KNB-17 / KNB-22 / KNB-17A Replacement Batteries for KENWOOD TK-280 TK-380 TK-190 TK-290 TK-390 TK-480 TK-481 TK-5400 TK-4100 (Compatible KNB-16A KNB-16L KNB-21 KNB-21N KNB-22N)

Package: 5 pcs knb16/knb17/knb22/knb17a batteries included. Compatibility: Designed for KENWOOD TK-280, TK-380, TK-190, TK-290, TK-390, TK-480, TK-481, TK-5400, TK-4100 and compatible with KNB-16, KNB-17, KNB-22, KNB-17A, KNB-16A, KNB-16L, KNB-21, KNB-21N, KNB-22N, TK280, TK380. If you’re unsure about your radio model number, please contact us and we will assist you. Performance & construction: These upgraded knb22/knb17a Li-ion rechargeable batteries offer higher capacity while matching the original size and thickness. They are built with premium grade A++ battery cells, a high-quality Aluminum casing and a Smart IC chip. Each unit is inspected under strict QC procedures to ensure it endures over 800+ charge cycles. Safety features: A built-in microchip protects the battery from over-charging, over-discharging, short-circuiting and over-heating. Customer support: If you have any questions or experience issues with the product or delivery, contact our team anytime. Our technical support and customer service promise a satisfactory response within 24 hours and will handle quality-related cases with a replacement or refund. Important note: Batteries may arrive with little or no charge. If the radio will not power on, fully charge the battery first. For optimal lifespan, fully drain and then fully charge the battery for the first 3 charging and discharging cycles.