How to Choose a LiFePO4 Battery by Voltage and Capacity
A buyer who already knows the system voltage has answered the harder question. What is left is narrower, and more useful: find a listed pack inside that voltage family, then read capacity and energy off that pack's own table. Borrow nothing from a neighbouring model's table, however similar the two packs look.
- LiFePO4 packs in 12V, 24V and 48V
- 7 x 12V models with full spec tables
- Portable stations and hybrid NiMH fitments
- Certificates available upon request
No founding year, headcount, phone or named contact is published on this site: those records conflict between sources and are not settled. Contact goes through the inquiry form.
Picture two jobs. One is a small backup job, a 12V UPS light, where the buyer checks a named 12V table for the energy and currents that job needs. The other is a whole-home solar job, where the buyer is shopping in the 48V family and reading a different set of tables. The habit is the same in both cases: stay inside the family, and trust only the table that belongs to the model being ordered.
This guide covers three families. Seven 12V models have full specification tables. The 24V offering is a range page, not a model page: it describes 24V options from 100Ah to 230Ah, and no per-model 24V table was read, so no 24V model specification is published here. The 48V family, listed at 51.2V nominal, has two 100Ah models with full tables, one 170Ah wall-mounted overview, and larger units up to 400Ah as listed names. Where a figure was never listed for a model, this guide says so.
Generic illustration, not a photograph of any product.
Read the capacity ladder before anything else
Inside the 12V family, capacity and energy climb together across the listed tables: 6Ah with 76.8Wh, 12Ah with 153.6Wh, 15Ah with 192Wh, 30Ah with 384Wh and 42Ah with 537.6Wh. Those pairs belong, in order, to LF4011-15 and LF4011-16, LF4020-7, LF0401501-7, LF4050-13 and LF4070-9, and each pair lives on its own model's page. A bigger pair does not correct a smaller pack's table; it simply means a different model is being looked at.
Above those five pairs sit two large packs that both list 3840Wh: the 300Ah model and the 280Ah model. Both energy figures are recorded exactly as listed, and they are not reconciled here, because the capacities differ while the listed energy is the same. A buyer weighing those two packs should confirm the energy figure for the exact model ordered, rather than assuming one of the two listings is a misprint.
The 48V ladder is shorter, and it rewards the same caution. Both fully tabled 100Ah models list 5120Wh, yet they are different models with different weights and different cycle-life figures, and this guide keeps them apart throughout. The 170Ah wall-mounted unit is an overview only: 48V, 170Ah and 8.7kWh are the figures read, and everything else about that unit belongs in a pre-order confirmation. Larger 48V names up to 400Ah appear as listed names with photographs, not as specification pages, and a photograph is never a specification.
Voltage decides the family
A 12V system takes a 12V pack. The seven 12V tables on this site cover small backup, UPS lighting, off-grid and golf-cart uses as listed for each model, so the buyer starts from the use listed for the model, not from a general claim about the voltage.
A 24V system takes a 24V pack, and here the buyer's room is narrower: because no per-model 24V table was read, a 24V choice can only be settled by confirming the specification of the exact 24V model offered, not by reading a neighbouring voltage's table.
A 48V system takes a 48V pack. The choice on this site runs between two fully tabled 100Ah models, a 170Ah wall-mounted overview, and larger listed names up to 400Ah. The range description also presents 48V units from 200Ah to 400Ah as the standard choice for whole-home solar and for light commercial backup, and it presents 48V as the mainstream choice for current solar installations. Both sentences describe the range; neither gives any single model a 200Ah or 400Ah specification it was never listed with.
Cycle life belongs to a model, not a family
Cycle-life figures on this site are published per model only. Among the 12V models with full tables, LF0401501-7 lists 6000 cycles, the highest listed cycle life among those 12V models, while four of the seven 12V tables list 2000 cycles. The two large 12V packs list 4000 to 6000 cycles each. None of those figures is a family figure, and none of them may be quoted as the cycle life of a different model.
The 48V 100Ah pair is the reason the rule exists. YB-LP48100H lists 2000 cycles and weighs about 38.2kg, while YB-LF51100 lists 4000 to 6000 cycles and weighs about 45kg. Publishing a single 48V 100Ah cycle-life figure would hide a real difference between two models, so this site publishes both figures on their own pages and never merges them into one.
Range descriptions sometimes mention cycle figures for a range as a whole. This guide does not attach any range figure to any single model.
Currents and terminals, model by model
Currents change sharply between models that share a voltage. LF4011-15 and LF4011-16 list charging at 3A with a 6A maximum and discharging at 3A with a 6A maximum continuous. LF4020-7 lists charging at 6A with a 12A maximum and discharging at 6A with a 15A maximum continuous, plus a 30A maximum pulse for under three seconds. LF4050-13 lists charging and discharging at 15A with 30A maximums and a 60A pulse limit. Copying one model's currents onto another model's order means ordering from the wrong table.
Terminals differ too: M5 on the 12Ah pack, M6 on most of the 12V tables, M8 on the two large 12V packs. Those are listed figures for named models, and they belong on the checklist for the exact model ordered.
The listings repeat a set of common claims across the 12V models: built-in automatic protection against over-charge, over-discharge, over-current and over-temperature, internal cell balancing, and maintenance-free operation. Those are listing claims, recorded here as listing claims rather than as independently tested results.
A checklist before ordering
Settle the system voltage first, and stay inside that family. Then pick a capacity and energy pair from a table that belongs to the exact model under consideration, and check the two large 12V packs against their own pages rather than assuming one corrects the other. Read currents, terminal, dimensions and weight from that same model's table, and read the cycle-life figure from that same model's table and nowhere else. Finally, confirm any range-only figure — a 24V capacity, a 48V whole-home capacity, a range communication feature — for the exact model offered.
Before ordering
Before payment, confirm MOQ, lead time, voltage, warranty and certification scope for your order.
Confirm the specification for the model actually ordered, not for a neighbouring model or a series range.