Li-Ion 18650 3.7V 2600mAh rechargeable battery FULLY PROTECTED with PCB Lithium Ion (as low as) $6.69!

These fully protected cells simplify usage with their integrated PCB. Perfect for your single cell application these cells are not for pack building as doing so will defeat the PCB protection which is matched to the correct voltage on a single cell. If you are building a pack please choose one of our other cells and the appropriate PCB.

Features and Benefits

• Unique and New! With integrated PCB Protection!
• Lithium Ion 18650 cylindrical rechargeable batteries
• Internal PCB protection prevents under-voltage at 2.5V and over-voltage at 4.25V.
• Unique PCB design and patent pending.
• Higher energy density and lower weight than other types rechargeable batteries
• Manufactured under ISO9001-2000 to assure quality
• Battery tested based on International Electrotechnical Commission (IEC) standard to ensure capacity, quality and life time
• Lighting or other device needing 3.7V power
• Building portable power device needing high energy density and low weight

Product Specifications

• Capacity: Nominal  2600 mAh, Minimum 2450 mAh
• Internal PCB protection prevents under-voltage at 2.5V and over-voltage at 4.25V.  UNIQUE INTERNAL PCB!
• Dimensions:
    Diameter 18+/-0.2 mm
    Height 67+/- 0.2mm 
• Weight (Typical) Approx. 46 g yes
• Nominal Voltage: Average 3.7V
• Cut-off Voltage: 2.5V
• Internal Impedance: less or equal to 180  milliohm (with PTC)
• Cycle Performance: 90% of initial capacity at 400 cycles
• Cycle life: > 500 cycles
• Charge: Current = 0.5C mA Voltage = 4.2 V End Current = 0.01 mA
• Discharge: Current = 0.5C mA End Voltage = 3.0V
• Max. Charging current: 1.5C ma
• Max. Discharging current 1.5C ma (for continuous discharge) 
  

Internal PCB Specifications:

Parameter				Minimum	Typical	Maximum	Unit
Operation Voltage				1.5		10	V
Excess Charge Detection Voltage				4.2	4.25	4.3	V
Excess Charge Release Voltage				4	4.05	4.1	V
Excess Charge Delay Time				61	77	93	mS
Excess Discharge Detection Voltage				2.437	2.5	2.563	V
Excess Discharge Delay Time				7	10	13	mS
Excess Current Detection Voltage				0.17	0.2	0.23	V
Excess Current Delay Time				9	13	17	mS
Short circuit Protection Voltage				VDD-1.2	VDD-0.9	VDD-0.6	V
Short circuit Protection Delay Time					5	50	uS
Consuming Current					3	6	uA
Standby Current					0.3	0.6	uA
Circuit Impedance					60	70	m-Ohm

NOTE: Use special caution when working with Li-ion cells, they are very sensitive to charging characteristics and may explode or burn if mishandled. Make sure the user has enough knowledge of Li-Ion rechargeable batteries in charging, discharging and assembly before use. Always charge in/on a fire-proof surface. Never leave charging batteries unattended. We are not responsible for damage if there is any modification of the batteries/chargers in any form or shape (including pack making). We are not responsible for any damage caused by misuse or mishandling of Li-Ion batteries and chargers. We only recommend using Lithium Ion rechargeable batteries with a control circuit (protection PCB) to assure safe charge, discharge, etc, use of lithium ion batteries with a protection circuit is potentially hazardous