Industrial LiFePO4 and Li-ion battery packs
On custom packs, most of what we assemble is split between lithium-ion and lithium iron phosphate. They solve different problems: density versus cycle life and thermal stability. Both need a BMS and matched cells.
Chemistry follows the duty cycle
Li-ion (NMC/LCO) stores more energy in less weight and volume: portable tools, handheld equipment, electronics you carry. LiFePO4 typically lasts on the order of 2,000 to 2,500 cycles versus about 500, is more thermally stable and accepts deeper discharges. Cell voltage also changes: 3.2 V versus 3.6–3.7 V, and that sets how many cells go in series.
Formats already in the catalogue
We work 18650 and 21700 cells in LiFePO4 (LIFE18650, LIFE21700) and 18650 in Li-ion (ICR18650 series). On those formats we build custom packs when the space or the connector does not fit a standard reference.
Frequently asked questions
LiFePO4 vs Li-ion?
It is not which is better: it is how many cycles the equipment will do and how much the weight matters. LiFePO4 wins on daily cycling (solar, traction, AGVs) and thermal safety. Li-ion wins when weight or volume lead and cycling is moderate. Both need a BMS and cells matched by internal resistance and voltage.
18650 / 21700?
Yes. The catalogue has LIFE18650 and LIFE21700 (LiFePO4) and ICR18650 (Li-ion) references in several capacities. If the format works but the connector, the enclosure or the communication does not, we assemble a custom pack on those cells.
IEC 62619 / IEC 62133?
IEC 62619 covers safety of lithium batteries for industrial use; IEC 62133 covers portable secondary cells and batteries. They are the usual reference frame for lithium. On custom packs ENERGIVM supports the homologation process: the customer homologates the finished equipment. We do not claim a pack certificate as if it were already issued.