EVE EU Poland Stock LF280K HSEV Grade A+ 3.2v Lifepo4 Battery For
Solar System VAT Free
NOTES:
EVE LF280K V1 versionThis EVE 280ah is M6 Stud type,comes with free busbars and M6 nuts
Poland stock,Free shipping to EU,VAT and TAX free
For lithium battery pack,deep cycles
Max pulse discharge current 2C for 30 seconds
| Nominal capacity | 280.0 Ah @ 0.5C discharge |
| Nominal voltage | 3.2V |
| Cycle Life | ≥8000 cycles |
| Max Charge Current | 1C(280Amper) |
| Charging Temperature | 0℃~55℃ |
| Storage Humidity | ＜70﹪ |
| Dimension | 174*72*205mm |
| Weight | 5.25kg |
| |
This lithium battery is at Poland warehouse,free shipping to EU
countries,tax free and duty free.
Free to Germany,Austria,Italy,France,Spain etc
5-7 days for delivery by UPS or GLS.
Difference of Grade A and Grade A+
Grade A lithium is unqualified Grade A+ battery.Lithium battery
manufacturers have a defect rate when producing lithium batteries,
including poor appearance, insufficient capacity, high internal
resistance, abnormal voltage, etc.These batteries cannot be sold to
his customers normally by the manufacturer, but they can be used as
energy storage batteries.
Good suppliers will classify these A-grade batteries and conduct
capacity tests, which will affect the final selling price of the
batteries. Some suppliers do not conduct any testing and sell these
batteries directly to customers, which is why you may receive
batteries with different voltages or capacities insufficient. Of
course, the price of these batteries is also very attractive.
There is a certain probability that grade A batteries may have the
following problems: the voltage of one battery cell rises and falls
faster than other batteries, bulges,unbalanced.
| Grade A | Grade A+ |
| Battery Grade Level | Unqualified EV battery | Qualifeid EV battery |
| QR code | Scratched or Tampered | Qriginal QR code |
| Capacity test | Needed | No Need |
| Matching | Not Matched | Batch Matched |
| Voltage difference | Potential | No |
| Swelling | Potential | No |
| Advised Voltage | Lower than 32S 96V | No limitation |
| Test Report | No | Factory report |
| Cost | cheaper | Higher than Grade A |
Started Poland warehouse since 2022.More than 2000 batteries
shipping from Poland to EU each month.
Self-pick up service available
Cash payment
This item is EVE Lifepo4 3.2V 280Ah item,QR code, Grade A+(not
Grade A), Brand new.
original report from EVE factory
Stud and screw terminals for option.
Default studs terminals
280ah Lifepo4 lithium battery is one of the favorite lithium cells
by DIY users for solar energy storage and off grid back up.
For caravan,campcaravan,golfcart,forklift,electrical bike,motorbike
etc.
This lithium battery is available for many applications,golf
cart,RV,solar storage system,E-motorcycle,Home energy storage
system,powerwall etc.
Safety Advice:
Do not submerge the battery in the water
Do not insert batteries with the (+) and (-) reversed
Do not disassemble,dispose in fire,heat or shot circuit.
Do not expose batteries to sunlight for long time
Do not keep batteries close to children
Do not short circuit the battery in any situation.
Do not discharge the new battery! Please fully charge them at
first.
Do not open the battery safety valve.
Do not violently wrest the screw on the terminal.
Do not mix different brands of battery in one pack
Do not mix different capacity or different conditions batteries
together.
Warm Tips:
Please check all batteries voltage and inner resistance and make
sure they are balanced before DIY.All batteries will be tested
before shipment but you need to test there too.You must have basic
knowledge of electronics and battery assembling.If you know nothing
please learn more before doing assembling. No refund or warranty
for any unprofessional operation.Some of the cells will have small
scratches due to moving or long transportation,but it won’t affect
usage at all.Hope you don’t mind it.
Why we need to top balance LiFePO4 cells before we use them to
build a battery pack ?
We buy some cells whether they are grade A, B or C or they are used
LiFePO4 cells, whether they are the same voltage or not, you still
need to do the initial balance.
What that means is to bring them to the same state of charge. But
using the voltage to determine if they are the same state of
charge, it’s unreliable for the chemistry. This is because there
will be relatively.....fly.....charge and discharge curve. That
means it could be the same voltage with your meters but they can be
slightly off the state of charge watts
It is important to have solid initial balance so that when you do
your first capacity test, you have accurate results. If one of your
cells is too high or too low, it triggers your BMS high or low
voltage in this connect. your capacity results will be off. You’ll
think you’re getting ripped off.
Also if you have balancing problems with the used or new pack, and
you stop active balancer on that pack to compensate for that.
You need to do the initial balance and see if this fix your
problem.
People see one of their cells spiking , they’ll say like “oh, that
seems balancing wrong there ”that’s not how you solve the problem.
You should do the initial balance, then the capacity test and watch
the cells under a large loads, to see if they are initial internal
cell resistance. And if you do have a bad cell, you should probably
sweep it off for a new one.
Also keeping in mind if you connect the cells in parallel, let them
naturally balance over time, they will balance.But it takes weeks
or months depending on what size battery bank you have.
The very initial voltage between them is very small, when it’s in
the high state of charge, this will pass current from each other in
balancing very quickly.
People check balancing of their cells and will say, “Oh, it’s only
off by 0.51volt” These are new cells and they come at the same
voltage. I suggest you connect them to a BMS, it could be OK. It is
technically true that you let the BMS monitor the balance on its
own.
But if you have a very large battery bank, or if you have very
ancient in-cell internal resistance, if you have large loads, or if
you want to balance the capacity, you should do a manual top
balance, no matter why.
