Find what fits, what is registered, and what the evidence supports.
BecSpec is a vendor-neutral technical search layer for replacement, compatibility and regulated-product decisions. Start with the specification or job you know; results keep source evidence and unresolved gaps visible rather than guessing.
Browse the main domains
The deepest BecSpec collections now have dedicated hubs. Start here when you know the problem family rather than the exact checker.
Find a replacement
Something failed, or needs specifying. Match it on the numbers that decide whether the new one works.
Free e-bike battery compatibility checker
Free, independent and brand-neutral. Check documented battery replacement, upgrade and range-extender compatibility across major e-bike systems rather than relying on voltage or connector shape alone.
Open the finder →Germany solar battery retrofit compatibility checker
Start with the inverter you already have. See which batteries are documented for it, which need conditions or accessories, and when an AC-coupled retrofit can leave the existing inverter in place.
Open the finder →Bike cassette & drivetrain compatibility checker
Count the rear cogs, add the cassette range and any brand or model you can see, then check the freehub, chain and derailleur details that decide whether the parts work together.
Open the finder →US DOE walk-in refrigeration model lookup & AWEF comparison
Search current DOE walk-in cooler/freezer refrigeration-system certifications by model, class, net capacity and AWEF, then compare current records without treating registry similarity as proof of replacement compatibility.
Open the finder →International motor replacement finder
Enter the motor ratings you know and compare current records from Brazil, the UK, South Korea and the US. BecSpec shows where the electrical match is clear and what still needs checking for fit.
Open the finder →Find a registered product
A regulator decides what may be supplied or used for a given job. Find what is approved for yours.
Argentina SENASA crop-protection finder
Search supported SENASA crop and target scopes, then compare the registered products BecSpec can establish by active chemistry and mode of action.
Open the finder →Crop protection strategy finder
Choose the country first, then compare the registered or authorised options BecSpec has for that crop and target.
Open the finder →Check a compliance route
Work out which rule applies, the limit or date that follows, and what you still need to confirm.
EPREL model lookup & EU F-gas checker
Search 30,000+ mapped EPREL air-conditioner and heat-pump models by model or supplier, then check selected Regulation (EU) 2024/573 rules using refrigerant, GWP, capacity and date.
Open the finder →Germany V2H / V2G compatibility checker
Check whether an exact EV and wallbox combination can use V2H or V2G in Germany, and what else has to be in place at home.
Open the finder →North America EV charging compatibility checker
Check whether a US or Canadian EV can use Tesla NACS Partner Superchargers, Magic Dock, CCS1 DC and Level 2 charging, including any adapter, software or model restrictions.
Open the finder →UK whole-home energy compatibility checker
Check whether solar, battery, EV charging, heat-pump controls and smart tariffs can work together in one UK home without controllers or grid limits getting in the way.
Open the finder →US HFC / refrigerant compliance checker
Check the federal AIM Act rule for the system, date and refrigerant you are dealing with.
Open the finder →EU industrial fan ErP 2026 checker
Check whether the fan is in scope, which exclusions or transition rules apply, and the minimum efficiency it has to meet.
Open the finder →Specialist tools
Useful compatibility and technical guide collections that do not need another primary homepage domain.
Vendor neutral and deterministic
Results are driven by published specifications, registrations and compatibility evidence rather than a preferred supplier or opaque score. Where the evidence supports a match, BecSpec shows why.
Honest about gaps
Missing dimensions, registration evidence or compatibility facts stay unresolved. BecSpec does not turn a typical value, similar model name or plausible assumption into a confirmed answer.