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The SF18650B is a 18650 Lithium Ion battery that comes with a protective feature and MICROUSB charge capability. It allows for easy charging through any USB power source such as a power bank, computer or laptop, USB wall charger or automotive USB port using the included MICRO-USB to USB cable. Please note that the following lights will be affected by the change:

1) FURY-DFT: 2x123As will be replaced with SF18650B. A Micro-USB charge cable will be included.

2) M600DF-BK: SF18650A will be replaced by SF18650B. The charge cradle will be replaced by a Micro-USB charge cable.

3) M600DF-TN: SF18650A will be replaced by SF18650B. The charge cradle will be replaced by a Micro-USB charge cable.

4) SF18650A will be discontinued and replaced by SF18650B.

Features:

- The 3.6V 18650 Lithium Ion rechargeable battery comes with a MICRO-USB port that makes charging easier. There's no need for a charging cradle.
- When plugged in, two LED indicators show the current charge state: Red for charging and Green for fully charged.
- Its 3,500 mAh provides extended battery duration.
- It comes with an 8-10A discharge rate, making it a reliable battery option for high drain devices like LED flashlights.