EVE EU Poland Stock LF280K HSEV Grade A+ 3.2v Lifepo4 Battery For Solar System VAT Free

EVE EU Poland Stock LF280K HSEV Grade A+ 3.2v Lifepo4 Battery For Solar System VAT Free

NOTES:

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.

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

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.

Since 2010, we've been one of the largest wholesalers of rechargeable batteries.

We solely focus on high - quality, grade A, brand - new batteries.

Our range includes LiFePO4, LTO, Sodium, solid - state batteries, and other trending ones.

Both cylindrical and prismatic cells are available, with capacities from 1300mAh to 320Ah.

These batteries are mainly for EVs and residential energy storage.

We have warehouses in Poland, the USA, and China.

This enables customers to select high - quality products and avoid poor - quality batteries.

It also allows us to deliver products quickly.

Moreover, we have a battery pack factory that supports design, OEM, and customization like 12V, 24V, 48V, etc.

We are an honest team.

Trust our 14 - year experience to help you achieve great success.

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