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| Price | Negotiation |
| MOQ | Negotiation |
| Delivery Time | 5-8 working days |
| Brand | BAIDUN |
| Place of Origin | China |
| Certification | CE、FC、MSDS、ROHS |
| Model Number | 3.2V280K |
| Packaging Details | The box size is 370*260*240mm, Use high-density foam to fix, one box contains two batteries |
| Payment Terms | Credit card, T/T,PayPal |
| Supply Ability | ≥30000 pieces/month |
| Place of Origin | China | rated capacity | 280K |
| Cycle life | 6000times | Standard discharge time | 2.0h |
| Size | 172*208*72mm | Max Charge Current | 1C |
| Packaging Details | The box size is 370*260*240mm, Use high-density foam to fix, one box contains two batteries | weight | 5.6KG |
| Model Number | 3.2V280K | Supply Ability | ≥30000 pieces/month |
| Certification | CE、FC、MSDS、ROHS | Brand Name | BAIDUN |
| Payment Terms | Credit card, T/T,PayPal | Price | Negotiation |
| Delivery Time | 5-8 working days | AC Impedance Resistance | ≤0.25mΩ |
| Minimum Order Quantity | Negotiation | Charging Temperature | 0℃~55℃ |
| Self^discharge rate per month | <3%/month | nominal voltage | 3.2V |
(1)
We
order
batteries
directly
from
the
brand.
Guarantee
A
grade,
brand
new,
genuine,
sufficient
capacity,
voltage,
resistance,
and
data
matching.
(2)
There
are
three
styles
of
battery
terminals
to
choose
from.
They
are:
original
terminals,
punched
terminals
and
soldered
studs.
Punch
M6,
stud
M6.
Generally,
welding
studs
are
easier
to
assemble.
(3)
A
battery
is
equipped
with
a
bus
bar
and
two
screws
as
standard.
[Bus
size:
90*20*2mm
(copper
nickel
plated)
screw
size:
M6]
(4)
Lithium
battery
modules
are
connected
in
parallel
or
in
series
(5) Warranty period: 3years
Lifepo4 battery 3.2V 280ah General Technical Parameter
| # | Item | Parameter | Remark | |
| 1 | Nominal Capacity | 280.0 Ah | (25±2) °C, Standard charge and discharge | |
| 2 | Typical Voltage | 3.2 V | ||
| 3 | AC Impedance Resistance( 1 KHz) | <0.25 mΩ | ||
| 4 | Standard charge and discharge | Charge / discharge current | 0.5 C/0.5 C | |
| Cut off voltage of charge / discharge | 3.65 V/2.5 V | |||
| 5 | Maximum charge / discharge current | Continuous charge / discharge | 1 C/1 C | According to continuous / pulse charge and discharge ammeters |
| Pulse charge / discharge (30s) | 2C/2C | |||
| 6 | Recommended scope of SOC | 10% 〜90% | N.A. | |
| 7 | Charging Temperature | 0 °C〜55 °C | According to continuous / pulse charge and discharge ammeters | |
| 8 | Discharging Temperature | -20 °C~55 °C | ||
| No. | Item | Requirements | Measuring Procedure |
| 1 | Rate discharge performance at25°C |
Discharge capacity/nominal capacity×l00% A) 0.5C(A)>100% B) 1.0C (A)>98% |
After standard charge and Ih rest, discharge to 2.5V cutoff with the current of 0.5 C (A), 1.0C (A), respectively. If the discharge capacity fails to meet the technical requirements, this test is allowed to be repeated three times |
| 2 | Discharge performance at different temperature |
Discharge capacity/nominal capacity×100 % A) 55°C>95% (Cutoff 2.5V) B) -20°C>70% (Cutoff 2.0V) |
Measure the initial capacity and state of the battery: A) after standard charge and 5h rest at 55°C, discharge to 2.5V cutoff with the current of 0.5C(A)； B) after standard charge at 25±2°C and 24h rest at -20°C±2°C, discharge to 2.0V cutoff with the current of 0.5C(A). |
| 3 |
The capacity retention and recovery at 25°C |
Capacity Retention ≥ nomi nal capacity×95 % Capacity Recovery ≥ nomi nal capacity×97 % |
Measure the initial capacity and state of the battery, after standard charge and stored for 28 days, discharge to 2.5V cutoff with the current of 0.5C (A), calculate the remaining capacity the retention can be expressed as a percentage of nominal capacity. After standard charged and 30mins rest, calculate the discharging capacity (Ah), the recovery can be expressed as a percentage of nominal capacity. The recovery is measured with discharge current 0.5C (A) with 2.5V cut-off at (25±2) °C. |
| 4 |
cycle life at 25 °C |
>6000 cycle @0.5C/0.5C | Under the 300kgf clamp, after standard charged and 30mins rest, discharge to 2.5V cutoff with the current of 0.5C(A) at (25±2) °C, and then start the next cycle, end with the capacity decreasing to 80% of the |
| initial capacity. The number of cycles is defined as the cycle life of the battery. | |||
| 5 |
cycle life at 45 °C |
>2500 cycle @0.5C/0.5C | Under the 300kgf clamp, after standard charged and 30mins rest, discharge to 2.5V cutoff with the current of 0.5C(A) at (45±2) °C, and then start the next cycle, end with the capacity decreasing to 80% of the initial capacity. The number of cycles is defined as the cycle life of the battery. |
| 6 |
End of life managem ent |
capacity/nominal capacity <70% |
During
the
use
of
the
battery,
the
battery
s
hall
be
stopped
when
the
end
of
life
regul
ations
are
exceeded. |
Baidun has always adhered to the business philosophy of high safety, high quality and environmental protection as its core values. Customer-centric, with excellent quality, competitive price, first-class craftsmanship, safe packaging and timely delivery. Provide customers with the best overall power supply solutions, OEM/ODM services and comprehensive after-sales support to meet the different needs of customers! Honesty and professionalism, this is also our responsibility!
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