Samsung Lithium Ion Battery, INR21700-48G, Brand New

These Samsung lithium ion battery cells, part number INR21700-48G, are new old stock. We received a lot of them and have spot-checked a few dozen. All met AC impedance requirements, and they all came in above 4,650 mAh when tested per the data sheet.

Many of these did not have heat shrink tubing, so we wrapped them in aftermarket green tubing. Those will not have the Samsung markings, but they are genuine Samsung INR21700-48G cells.

Lithium Ion Battery Safety

• Misusing or mishandling a lithium-ion battery may cause fire or explosion, which can result in personal INJURY or DEATH and property damage. You MUST read the safety warnings and resources before purchasing, using, and/or handling batteries. Even if properly handled, lithium-ion batteries may still catch fire or explode. The buyer acknowledges these risks and absolves Higher Wire Inc. of any responsibility for any damage these cells may cause.
• Unless otherwise stated, batteries sold by Higher Wire are unprotected and not recommended by us or their original manufacturers for use unless equipped with a protection circuit board (PCB), battery management system (BMS), and/or similar device.
• Lithium batteries must be properly disposed of – NOT in a fire or in the trash. Laws vary at the city, state and national level, and it is the buyer’s responsibility to ensure they are recycling lithium batteries properly. Many local governments and retail stores offer free recycling.
• Unless otherwise stated, batteries sold by Higher Wire are used and have no warranty, either from Higher Wire or the original manufacturer. Although we visually inspect and analyze/grade all batteries prior to sale, it is the buyer’s responsibility to inspect all batteries for physical damage, corrosion, and voltage upon receipt. Contact us immediately if there are any issues with an order, and do not use any battery that is damaged or below 3.0 volts upon receipt.
• Unless otherwise stated, batteries sold by Higher Wire are charged to 40% SOC (~3.4v) per IATA and DOT regulations. Charge battery fully to 4.2V before first use.
• Never attempt to mix and match brands, including models as well as old and new, used, and unused lithium-ion batteries. It is the buyer’s responsibility to ensure a battery is compatible with the intended application. Contact us with any questions, including technical.
• Unless otherwise stated, batteries sold by Higher Wire are shipped as UN3480 per DOT and IATA regulations. We ship using ground shipping to minimize risk of damage to persons or property.
• Go to our Lithium Battery Safety page for full lithium battery safety precautions.