Specifications 5V 0.2A
Product Categore Other
replacement for iphone 3 backup battery

replacement for  iphone 3  backup battery

1 Applicable scope
This manual is applicable to the WTED4917A portable battery for iPhone 3G/3G s manufactured by
Win-Top.
Composition
1.1 1 Lithium-ion battery
1.2 PCBA
1.3 Hardware &Plastic case
1.4 Input/output jack,4 LED, switch and button.

2 Executive standard
2.1 Executive standard for cells
Document name Controlled number and version Standard type
Underwriters Laboratories Inc.
Standard for Safety Lithium Batteries
UL 1642
UL international
standard

3 Basic battery performance
3.1 Test conditions
3.1.1 Except for otherwise specified, all the test items in this manual are to be done in standard
atmospheric conditions
Temperature: 15°C~35°C
Relative humidity: 45%~75%
Atmospheric pressure:86 kPa~106 kPa
3.1.2 Requirements for measuring meters and devices
The precision of meters for measuring voltage shall not be lower than 0.5, and the internal resistance
shall not be less than 10KΩ/V.
The precision of meters for measuring current shall not be lower than 0.5.
The constant current load within the measured power voltage range shall be adjustable, and
the relative error of the current is 0.1%.
3.2 Basically capability of Cell
Testing instrument: Multimeter Fluke187,Testing instrument of inner resistance, calipers, charge or
discharge cabinet
Item Standard Remark
3.2.1 Cell type 503450 Lithium-ion battery
3.2.2 Standard capacity.(mAh) 1800/Cell
According to
GB/T18287-2000standard
3.2.3 Standard voltage (V) 3.7/Cell Multimeter
3.2.4 Inner resistance (mΩ) ≤90/Cell Testing instrument of inner resistance
3.3 Basic performance of protective circuit board
Testing instruments

 Multimeter Fluke187, Fluke45 Dual Display Multimeter, and electronic load.
Item Standard Remarks
3.3.1 Over-charge protection
voltage (V)
4.30±0.05/Cell Voltmeter
3.3.2 Over-discharge
protection voltage (V)
2.40±0.10/Cell Voltmeter
3.3.3 Over-current protection
current (A)
2~3
For protection circuit module, If short
circuit appears under normal use,
please recharge the battery for 3
seconds to renew.
3.4 Basic performance of battery pack
Testing instruments: Multimeter Fluke187, Fluke45 Dual Display Multimeter, electronic load,
timer and discharge cabinet
Item Standard Remark
3.4.1 Weight (g) 66.5
3.4.2 Outline dimensions
(mm)
113.2*65.9*21mm
3.4.3 Rated capacity
(mAh)
1800mAh / 3.7V
Discharge at 0.2C with
discharge cabinet
3.4.4 Max. input voltage
(V)
5.5 Voltmeter
3.4.5 Max charging current
(mA)
700
3.4.6 Output voltage (V)
5.0±0.2 RUNNING MODE
<1V
Iout > Over-current
protection current (A)
3.4.7 Charging mode CC/CV
Auto recharge if battery
cell voltage low
3.4.8 Max. output current
(mA)
700
3.4.9 Self Power
consumption (uA)
≤300 SLEEP MODE
3.4.10 Charge indicating

Press the button
3.4.13 The voltage of the
cell when charging
finished
4.15±0.1 V
3.4.14 Cycle life ≥300 times
When the discharge of
the battery is less than
80% of the rated capacity
for three consecutive
times, it is regarded that
the battery’s life is ended
3.4.15 Convert efficiency ≥80%
3.4.16 Standard accessory

4 Cell safety performance
Item Testing condition
Performance
requirement
4.1 Impact
Fix a standard and charged cell onto the vibration bench, vibrate
in directions X, Y and Z respectively for 30 minutes at an
amplitude of 1.6mm, vibration frequency of 10Hz~55Hz, and
1Hz for each minute.
There should be no evident
damage, breaking, liquid
leakage, smoking or
explosion.
4.2 Falling
Let a standard and charged cell fall onto the concrete ground
twice at a height of one meter.
There should be no liquid
leakage, smoking, fire or
explosion with the battery
4.3 Constant
humidity
and
thermal
performan
ce
After the battery is fully charged, place it in a constant humidity
and temperature cabinet with a temperature of 40ºC±2ºC, and a
relative humidity of 90%-95% for 48 hours. After the experiment
is finished, place the battery in an environment with a
temperature of 20 ºC±5 ºC for two hours, and then check the
appearance of the battery. Discharge the battery at a constant
current of 1C5A, until the ending voltage of 2.75V is reached.
There should be no evident
distortion, rusting, smoking
or explosion for the battery,
and the battery discharge
duration should be ≥36min
4.4 Low
temperature
performance
After the battery is fully charged, place it in a low temperature
cabinet with a constant temperature of -10ºC±2ºC, for 16 to 24
hours, and discharge the battery to the ended voltage of 2.75V at
a current of 0.2C5A. After the experiment is finished, place the
battery in an environment with a temperature of 20 ºC±5 ºC for
two hours, and then check the appearance of the battery.
There should be no
distortion, smoking or
explosion for the battery,
and the battery discharge
duration should be ≥3h

5 Battery markings
5.1 The following items shall be marked on the packaged battery
5.1.1 Use the specified charger only
5.1.2. Avoid throwing the battery into fire or heating it
5.1.3 Avoid short circuiting the two poles of the battery
5.1.4 Avoid disassembling or decomposing the battery
5.2 Battery markings shall be prepared according to the customer’s sample, with clear and readable contents.
6. Battery packaging and transportation
The battery shall be packaged according to the sample or packaging requirements provided by the
customer, and transportation of the battery shall be in compliance with the purchase contract signed between the
two parties.
6.1 Battery storage
To store the battery for over three months, it is necessary to maintain the battery at 50% of the rated
capacity (to charge once three months), and place it in a dry and cool place, with a temperature range of
-1ºC~30 ºC, free from contact with corrosive matters, and keep it away from fire and heating sources.
6.2 Warranty period and liabilities
The warranty period lasts for eighteen (18) months from the date of delivery.
Shenzhen Win-Top Electronics Tech Ltd is not held responsible for any accidents due to failure in
complying with this manual’s instructions during operation. The company will notify the purchaser once
there is any change with the manual.
6.3 Revision of the manual
When revising the manual, the company will notify and get acknowledgement from its customers.
6.4 Alarms and matters for attention when using the battery