The spec sheets, side by side
The numbers from the manufacturers' own datasheets, normalized so you can sort and compare: what a battery can really deliver and charge at, what a panel puts out on a cold morning, what an inverter idles at, how long a generator runs at half load and whether it can start itself. Plus the price per unit that matters ($/kWh, $/W, $/A) where a current price is known.
LiFePO4 batteries
Server-rack 48 V units and 12/24 V drop-ins: capacity, discharge and charge limits, cycle life, cold-charge floor, comms, listings, and price per kWh.
21 products →Solar panels
12 V-class and residential panels: electrical numbers that drive string design (Voc, Isc), efficiency, size, weight, fuse rating, warranty, and price per watt.
22 products →Inverters and hybrids
Continuous and surge watts, battery voltage, split-phase or not, PV input, charger amps, idle draw, generator input, listings, and price per continuous watt.
20 products →Charge controllers (MPPT)
Max charge amps, battery voltages, PV input voltage limit, array watts per bank voltage, comms, and price per amp.
15 products →Generators
Running and peak watts, fuel, inverter or open-frame, tank and runtime, noise, electric and two-wire auto-start, 240 V, weight, and price per running watt.
18 products →Water pumps
Diaphragm pressure pumps, DC and AC submersibles, solar pumps, jets, and hand pumps: flow, head, amps, shutoff pressure, ports.
17 products →Specs come from manufacturer datasheets and primary retailer spec pages; each row carries a confidence flag and a link to the sheet it came from. Prices are list or retail at the time noted and move constantly; use them for the ratio ($/kWh, $/W), not the last dollar. Missing a product you are comparing? Tell me. See also the price index for this month's market ranges and the gear page for what this site vouches for.
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