LINEX

How to Compare Lithium Battery Brands (Buyer’s Framework)

Short answer: Compare brands on six things you can verify — cell provenance, BMS specification, test conditions behind the cycle rating, export documentation, warranty terms and after-sales support. Marketing claims, capacity labels and price per Ah tell you almost nothing until those six are on the table.

This page is a framework, not a ranking. We make LiFePO4 batteries, so treat our views with the appropriate scepticism — but the questions below are the same ones we expect buyers to ask us.

The Six Things That Actually Differ

Item	What to ask	Red flag
Cells	Which cell maker and model? Can I see a capacity report for the batch?	“Grade A” with no maker or report
BMS	Continuous and peak current, cut-off voltages, temperature limits, balancing method	Only “smart BMS” with no numbers
Test conditions	Cycle life at what DoD, temperature, C-rate and end-of-life capacity?	“6,000 cycles” with no conditions
Documentation	UN38.3, MSDS, CE, RoHS for this shipment	Generic files that do not match the model
Warranty	Years, what is covered, who pays freight, how claims are handled	Warranty mentioned only in the brochure
Support	A named contact, commissioning help, spare BMS availability	Only a shared sales inbox

Why Price per Ah Misleads

Two 100Ah packs can differ by 30% in usable energy once depth of discharge, BMS limits and cell quality are accounted for. Compare cost per usable kWh, not cost per Ah — and include freight, duties and the failure rate you expect over five years.

How to Verify a Claim

Ask for a capacity test report with the serial numbers of the units you will receive.
Ask for the cell datasheet, not just the pack datasheet.
Order one sample and test it yourself before the container.
Ask what happens if a unit fails in year two — who ships the replacement, and at whose cost.

Where LINEX Fits

We are a Shenzhen-based LiFePO4 manufacturer supplying 12V, 24V and 48V packs, telecom cabinets and portable power stations to importers and distributors. We publish our specifications, provide batch capacity reports and ship export documentation with each order. We are not the cheapest quote you will receive, and we do not claim to be the largest.

Frequently asked questions

Is a higher cycle rating always better?

Only if the test conditions are comparable. A 6,000-cycle rating at 80% DoD and 25°C is meaningful; the same number with no conditions is marketing.

Are Grade A cells worth the premium?

For a product you will warrant for five years, usually yes. The price gap is small compared with the cost of replacing failed units in the field.

Should I buy from a trading company or a factory?

Both can work. What matters is whether the seller controls cell sourcing, BMS configuration and testing, and whether they can show you the reports.

How do I compare two quotes quickly?

Put usable kWh, BMS continuous current, cycle test conditions, warranty terms and included documents side by side. If a quote cannot fill those columns, the price is not comparable.

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