Tenergy 9.6V NiMH Airsoft Battery 1600mAh Stick Battery Pack with Mini Tamiya Connector for AK47, MP5K, RPK, PKM (Optional Charger) THE IDEAL AIRSOFT GUN BATTERY - Fits popular models of airsoft guns like: AK47, MP5K, RPK, PKM, G36C, M4A1-RIS, M4A1, CAR15, MP5A5, MC51, FNP90, AUGRT,AUGM, G3A4, G36, STEYR. AK/G5K folding stock models and other upgraded and/or modified AEGs, we recommend measuring the gun compartment for best fit. TRUSTED PERFORMANCE - The Tenergy9.6V AEG batteryfeatures rapid charge up, with high capacity rating of 1600mAh that provide more playtime for your airsoft rifles. ADVANCED PROTECTIONS - Thesmart battery chargerincludes reverse polarity protection, short circuit protection, and over-charge protection. (Note: This charger is only for recharge for NiMH batteries, do not charge for LiPO batteries.) HOBBY BATTERY CHARGER- Tenergyintelligent battery charger is great for most popular airsoft guns and RC hobbies batteries because ithas a standard size Tamiya connector and a standard to mini Tamiya adapter. Works great for any 8.4V or 9.6V NiMH battery packs in airsoft, RC cars/airplanes that use a standard or mini Tamiya connector. COMPACT DIMENSIONS - Our electric airsoft guns batteryis designed from 2/3A NiMH battery cells, stick shape battery dimensions are 0.69'' (diameter) with 9.21" (length). that can fit most airsoft guns; The charger has standard size and mini Tamiya connector fit 8.4V-9.6V battery. Buy with confidence, your charger includes a 12-month warranty. Fully recharge your new battery pack when you first receive it. Do not over-discharge the battery, stop using it when you notice a drop in performance. Do not over-charge the battery, remove the battery from charger when you are done recharging. Heat lowers battery life, do not charge or discharge the battery when it&#039;s hot. Always let the batteries cool down to room temp before using it/charging it. Do not store the battery with low voltage, recharge after each use to avoid over-discharge. Always store the battery in a dry and cool place, never expose it to heat or direct sunlight. Recharge the battery once every 6-month, if they will be unused or stored long term. DO NOT CHARGE: if the label on your battery says: LiPO, LIPO, Li-Po, LI-PO, Li-Polymer, Li-Poly, Lithium Polymer, Li-ion, Lithium-Ion, Lithium. Caution: LiPO battery packs may often have two sets of leads/connectors - do not charge if identified as LiPO battery. Failure to follow these warnings may result in fire or personal injury. Contact our customer support team if you are unsure if your battery can be charged.