The BMS decides what the cells are allowed to do
A LiFePO4 battery is sold by its amp-hours, and almost everything that separates two of them at the same capacity sits in the battery management system bolted to the cells. The BMS publishes a continuous discharge current in amps, and that number — not the capacity — decides what the battery can run: 100 Ah behind a 50 A BMS delivers roughly 600 W at 12 V, whatever the inverter behind it is rated for. It also decides what happens at the edges, and the edge that matters most in a garage or a van is cold: charging a lithium iron phosphate cell below freezing damages it, so a BMS either blocks the charge, warms the cells, or does neither and leaves it to the owner. Cycle life is published to a capacity percentage and at a stated discharge depth; the same cells quoted at 100 % depth and at 80 % give very different numbers. The physical part matters as much: terminal type and size decide which lugs fit, and the case dimensions decide whether it drops into a box designed for a lead-acid battery it is meant to replace. We compare nominal capacity, continuous and peak discharge current, BMS protections, low-temperature behaviour, cycle life, terminals and dimensions.
100 Ah at 12.8 V · up to 1C charge and discharge · BMS with balancing · 8500 cycles at 30 % DoD · M8 internal thread · 260 × 168 × 209 mm
A 12.8 V 100 Ah LiFePO4 battery with an integrated BMS, quoted at up to 1C charge and discharge, with dimensions and terminal type published in full.
Best for: Replacing a lead-acid leisure battery in an existing tray, where the physical fit has to be checked first.
≈ €167
100 Ah at 12 V · 100 A BMS, 100 A continuous charge and discharge · charge stops at −7 °C, resumes at ≥0 °C, discharge stops below −20 °C · 15000 cycles · Bluetooth · 10.5 kg
A 12 V 100 Ah LiFePO4 battery with a 100 A BMS, Bluetooth monitoring, and published low-temperature thresholds for both charging and discharging.
Best for: A van or boat that will see freezing mornings, where the charging threshold is the specification that matters.
≈ €200
170 Ah at 12 V, 2176 Wh · 150 A BMS · charge stops below 0 °C, resumes at 5 °C; discharge stops below −20 °C · up to 15000 cycles · Bluetooth 5.0 · 352 × 174 × 190 mm · 14.5 kg
A 12 V 170 Ah LiFePO4 battery with a 150 A BMS and Bluetooth 5.0, published with charging and discharging temperature thresholds and stated not to be suitable as a starter battery.
Best for: A converted van or a fishing boat where the battery goes in sideways and the state of charge needs checking from a phone.
≈ €271
100 Ah at 12.8 V · 100 A maximum charge current · 15000 cycles at 10 % DoD, 8500 at 30 % · 12-year design life · M8 internal thread · 260 × 168 × 217 mm · 10 kg
A 12.8 V 100 Ah LiFePO4 battery published with two cycle figures at two depths, a maximum charge current in amps, and a stated 12-year design life.
Best for: A shallow-cycling installation — a balcony store or a standby bank — where the 15000-cycle figure is the relevant one.
≈ €172
200 Ah at 12.8 V, 2560 Wh · 100 A BMS, 100 A continuous charge and discharge · 1280 W maximum charge power · 5000–15000 cycles at 100 % DoD · 24 kg · 4S4P expandable
A 12.8 V 200 Ah LiFePO4 battery with a 100 A BMS, published as 2560 Wh, rated for full-depth cycling and expandable to a 51.2 V 800 Ah arrangement.
Best for: A fixed off-grid installation where the bank will be built up over time and physical fit is not constrained.
≈ €250
330 Ah at 12 V, 4224 Wh · 200 A BMS · low-temperature cut-off named without a figure · over 80 % capacity after 2000 cycles · expandable to 67.58 kWh · app monitoring
A 12 V 330 Ah LiFePO4 battery with a 200 A BMS and app monitoring, published as retaining over 80 % of capacity after 2000 cycles and expandable to a 51.2 V bank.
Best for: A fixed off-grid bank where capacity per case matters more than knowing exactly what fits.
≈ €355
A price quoted in the text of a PowerVerdict page dates from the day that page was written; the live figure beside each product is fetched while you read and replaces it.
