Weltool UB18-26 revolutionizes from the traditional Li-ion battery protection circuit design, placing the protection circuit with the battery core at the anode (positive terminal, combined with the steel outer shell, effectively preventing the danger from impact, such as short circuiting, without increasing the diameter of the battery.

   UB18-26's anode protection circuit includes the Micro-USB charging port, enabling direct charging using USB cables connected to a 5V adapter, a PC USB port, or any portable power banks.  The UB18-26 can also be charged from a compatible lithium battery charger.  While it is being charged, the indicator lamps on the battery will display the charging status. 

   UB18-26 features low internal resistance, large capacity, and high discharging current.  The core is protected by a three layer system: Pressure Valve, Micro-pore Partition Plate, and PTC Negative Blocking protection! There are four protection circuits for: Overheating, Over-charging, Over-discharging, and Short-circuit protection! The anode (positive terminal) of the battery features a protruding cap for improved connection to springs or other PCB surfaces.  This improves functionality when the battery is used in series during application. UB18-26 also has an improved exterior wrap to protect the battery from damage and retains the rugged dependability of Weltool!

Specifications:

• Capacity：2600mAh  -  18650 size
• Button Top
• PCB: Yes
• Resistance：≤50mΩ
• Voltage：3.6-3.7V
• Discharge：5A（MAX）
• Charge：0.8A（Micro-USB port charging），1A（Battery Charger）
• Charging Protection：4.3±0.05V
• Discharge Protection：2.5±0.1V
• Status Indicator: Red Charging ; Blue Light Full
• Temperature during charging：0-45℃
• Temperature during discharging : -20-60℃
• Size：18.6±0.2mm (Dia.) ，70±0.2mm（Length）
• Weight：48.4±0.2g
• ***Please note: Price listed is per battery

*** WARNING ***

All users must have appropriate understanding of lithium-ion batteries before purchase. Use caution when working with and using lithium-ion batteries as they are very sensitive to charging characteristics and may explode, burn, or cause a fire if misused or mishandled. Always charge in or on a fire-proof surface. Never leave batteries charging unattended. Buyer is responsible for any damage or injury caused by misuse or mishandling lithium-ion batteries and chargers. No express or implied guarantee of compatibility with any device can be made. Charge only with a smart charger designed for this specific type of lithium-ion battery. Do not mix and match old and new, used and unused batteries.

• DO NOT USE WITH E-CIGARETTE, VAPORIZER, OR SIMILAR DEVICE
• MISUSING OR MISHANDLING LITHIUM-ION BATTERIES CAN POSE A SERIOUS RISK OF PERSONAL INJURY, PROPERTY DAMAGE, OR DEATH
• BATTERIES MAY EXPLODE, BURN, OR CAUSE A FIRE IF MISUSED OR MISHANDLED
• ONLY USE WITH PROPER CIRCUITRY IN A PROTECTED BATTERY PACK
• ONLY USE WITHIN MANUFACTURER LISTED SPECIFICATIONS
• DO NOT STORE LOOSE BATTERY IN A POCKET, PURSE ETC. - ALWAYS USE A PROTECTIVE CASE OR BOX
• KEEP AWAY from metal objects to prevent short circuiting
• DO NOT short circuit
• DO NOT use if wrapper or insulator is damaged or torn
• DO NOT use if damaged in any way
• DO NOT overcharge or over-discharge
• DO NOT modify, disassemble, puncture, cut, crush, or incinerate
• DO NOT expose to liquids or high temperatures
• DO NOT solder, spot weld only
• User must be familiar with handling lithium-ion batteries before purchase
• Usage of batteries is AT YOUR OWN RISK
• ALWAYS charge in or on a fire-proof surface and never leave charging batteries unattended