Tenergy&nbsp;8.4V NiMH&nbsp;Airsoft Battery&nbsp;3800mAh&nbsp;Flat&nbsp;Battery Pack&nbsp;with&nbsp;Standard&nbsp;Tamiya Connector for&nbsp;Airsoft Guns, RC Cars/Planes&nbsp;(Optional Charger) THE IDEAL AIRSOFT GUN BATTERY  Tenergy 8.4V NiMH battery designed to fit M16, SR16, full stock AK series, and full stock MP5 series: G&P M16A1, KNIGHTS SR16, MP5 SD5, MK5A4, G3 SD1, M16VN, CA G3 SG1, G3 A3, FAMASF1, M1A1, ASSV, PSG1 and others with Standard Tamiya Connector. For upgraded and/or modified AEGs, we recommend finding connector and measuring the gun compartment for best fit. TRUSTED PERFORMANCE - The Tenergy replacement AEG battery features rapid charge up, with high capacity rating of 3800mAh that provide more playtime for your airsoft rifles. HOBBY BATTERY CHARGER - Tenergy universal charger is great for most airsoft guns and RC hobbies because it has a standard Tamiya connector, standard to mini Tamiya adapter and standard Tamiya to alligator clips adapter. Works great for any 6V, 7.2V, 8.4V, 9.6V 10.8V, and 12V NiMH/NiCd battery packs in airsoft, RC car, RC airplane, RC truck, RC tank, RC boat that use a standard Tamiya/mini Tamiya/alligator clips. QUICK CHARGE - Select between 1 Amp (recommended for 1000-1800mAh packs) or 2 Amps (recommended for packs over 2000mAh) on the RC battery charger to quickly charge a battery pack. (Note: This charger only charge for NiMH/NiCd batteries, do not charge for LiPo batteries.) PERFECTLY DESIGNED - The electric airsoft guns battery made of Sub C NiMH battery cells, rifles battery pack dimensions are 6.13" (length), 1.9" (width), 1.0" (height) that can fit many airsoft guns with standard Tamiya connector; The charger has standard size and mini Tamiya connector fit 6V-12V 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.