21700 BAK 4800 mAh High drain FLAT TOP Lithium-Ion battery

These new 21700 batteries is probably one of the best lithium ion batteries available due to being able to store 4800 mAh capacity and provide a maximum peak discharge of 30A ! This makes these batteries ideal for high drain application such as electric scooters, electric bikes, solar power packs and other electric applications.

NCR Lithium-Ion batteries are a new type of "hybrid" battery manufactured by Panasonic and others. NCR batteries use a Cobalt cathode like ICR batteries but have the same hybrid makeup with nickel which IMR batteries have. This provides for higher drain capabilities while also having higher overall battery capacity. These are Genuine high-quality batteries direct from the manufacturer and not to be compared with the cheap imported batteries.

Device application:

• Power tools
• Electric scooters
• Electric bikes / e-bikes
• Modems
• RC Toys
• Solar power packs
• Handheld vacuum
• Portable lights
• Power banks
• EV (Electric Vehicles)   
• DIY projects
• And much more ! 

Specifications:

• Manufacturer: BAK
• Model: NCR21700 -4800
• Size: 21700
• Rechargeable: YES
• Nominal Capacity: 4800 mAh
• Nominal Voltage: 3.6V
• Discharge End Voltage: 2.5V
• Standard Charging Current: 1.25A
• Charging maximum Voltage: 4.20V
• Continuous Discharging Current: 15A
• Peak discharge rating: 30A
• Positive cap: Flat top
• Protection: Unprotected
• Dimensions: 70 mm (L) x 21 mm (D)
• Weight: 69g
• Operational Temperature Range: 0 to 50 degrees C (best below 30 degrees C)

Note: Batteries will only have test charge. Ensure batteries are fully charged to reach full capacity. Failure to do so may lead to long term cell issues.

Usage & Charging

!!!!! IMPORTANT!!!!! These are immensely powerful batteries, and extreme care should be taken using them. Only use with brand name, quality chargers (like LiitoKala, Nitecore, XTAR) and equipment! Unfortunately, we cannot replace batteries that are damaged by non-compliant chargers or equipment. There are so many chargers on the market, we cannot possibly keep track of which ones will work with these batteries. You will have to contact the charger manufacturer to ensure it can charge these batteries without damaging them. Please ensure you only use these (or any other Lithium Ion) batteries with proper Lithium-Ion chargers and equipment. Lithium-Ion batteries can easily be damaged by charging them with too high current or exceeding the maximum rated current discharge. In worst case Lithium-Ion batteries can explode or catch fire when used improperly! 

Use at your own risk. We do NOT accept any responsibly for damage, injury or death caused by improper use of these batteries!

• Do not overcharge! Ensure the charger voltage does not exceed the batteries stated full charge voltage.
• Do not over-discharge! Ensure the equipment you use do not draw more current than the batteries “Maximum Continuous Discharge Current”.
• Do not leave batteries discharged for a long period! Leaving Li-Ion batteries in a discharged state can incur irreversible damage – creating a loss in capacity and a loss in cycles.
• Do not short circuit your batteries! NEVER short circuit a 21700 (or more other) batteries! Short circuiting can cause a huge surge of current that will potentially burn out your battery, damage your equipment, and even cause serious injury to you!
• Do not let your batteries touch each other or other metallic items! Keeping your batteries loose, such as in your pockets, is a serious way to have your batteries fail and seriously harm you. There are battery holders and covers to keep your batteries safe.
• Do not dispose any battery in a fire! There are dangerous chemicals in batteries. If you try to burn your batteries, they will release dangerous fumes and will probably explode. Always dispose your old batteries to a battery recycling centre.