990307D MicroSun Technologies, 990307D Datasheet - Page 2

• Manufacturer Part Number: 990307D
• Manufacturer: MicroSun Technologies

Specifications of 990307D

• Rechargeable/non-rechargeable: Rechargeable
• Battery Capacity: 0.55Ah
• Battery Type: Secondary
• Battery Shape: Rectangular
• Number Of Cells: 1
• Battery Chemistry: Lithium-Ion
• Voltage: 3.7
• Charge Current: 275
• Charge Time: 2.5hrs
• Memory Effect: No
• Average Service Life: 400Cycle
• Product Length (mm): 33.8mm
• Product Depth (mm): 43.35mm
• Product Height (mm): 4.7mm
• Operating Temperature Max Deg. C: 45C
• Operating Temperature Min Deg. C: 0C
• Lead Free Status / RoHS Status: RoHS Not Applicable

REVISION
DOCUMENT NUMBER:
00
4.4 Discharge condition:
4.5 Cycle life: 80% of initial minimum capacity after 400 cycles at 0.2C, 25°C
4.6 Temperature:
4.7 Products shipped have 40% state of charge typical
4.3.2 To charge lithium-ion battery packs please follow the charging instruction stated
Charging instructions
990307D
Cutoff voltage of 3.0V
Maximum discharge current of 1100mA.
Charge 0~45°C
Discharge -20~60°C
Storage -20~20°C
Charge Voltage: Limit the maximum charge voltage to 4.2V times the number of
cells connected in series. This charging voltage is noted on the product
specification sheet.
Charge current: Packs should be charged at C rate for lithium-ion cells. C is the
nominal capacity of the pack. (Example: for a 2400 mAh cell, charge at 2.4A).
Pre-charge: If the cells are deeply depleted (less than 2.9V per cell), packs should
be charged at 10% of their capacity (Example: for a 2400 mAh cell, charge at 240
mA) until reaching 3.0V per cell when charging can be continued as stated above.
Charge temperature: Do not charge lithium ion cells at less than 0°C or more than
45°C.
Reverse polarity: When connecting the cells to a charger, verify proper polarity.
Charge method: Lithium ion cells should be charged using a constant
current/constant voltage (CC/CV) method. Apply the charge current as stipulated
above in step 2 until the pack reaches the voltage measured in step 1. Then, hold
the voltage constant until the current tapers down to about 5% of nominal capacity
(Example: for a 2400 mAh cell, charge until current is 120 mA).
ECR/ECN INFORMATION
EC No:
DATE:
below:
PRODUCT SPECIFICATION
TITLE:
CREATED/REVISED BY:
3.7V 550mAh Li-Ion battery
AIE
CHECKED BY
MJS
APPROVED BY
SHEET No.
2 of 3
MJS