Is it worth always buying the most expensive one?
When selecting lithium batteries, you need to compare these points one by one, not just look at the price.
Why is the warranty different even for the “same” battery?
Can a supplier fake the capacity? Like label 100Ah but deliver less?
Some quotes mention IEC 62619 and UN38.3. Others don’t. Is that why prices differ?
What are “Grade-A” vs “Grade-B” cells, and does it matter?
