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Eerlijk over Thuisbatterijen vs Check My Ring Size

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Eerlijk over Thuisbatterijen compared with Check My Ring Size
DetailEerlijk over Thuisbatterijen logo Eerlijk over ThuisbatterijenCheck My Ring Size logo Check My Ring Size
What it doesIndependent calculator to check if a home battery pays for itself in your situation Free ring size checker with three calibration methods and six regional sizing systems
StageNot given Startup
FoundedNot given 2026
Based inNL Not given
Pricing modelFree Free
PricingNot given Not given
Key features
  • Compares battery models from 23 brands on payback time and net result after 15 years
  • Calculates with real hourly EPEX prices for dynamic energy contracts
  • Processes the end of net metering from 1 January 2027
  • Provides negative buying advice if purchase is not worthwhile
  • No account or email required
  • Generates 10-page PDF advice report with lowest prices from 11 shops
  • Free 22-page PDF handbook about home batteries
  • Analyzes consumption and solar generation hour by hour for full year
  • Three scenarios: pessimistic, most likely and optimistic outcomes
  • Updates prices from 11 online shops every morning automatically
  • Six regional sizing systems simultaneously
  • Band width adjustment for accurate fit
  • No signup or app required
  • Browser-based with no data upload
What makes it different
  • Truly independent: sells no batteries, has no arrangements with installers, publishes negative buying advice
  • No personal data collection: zero signup required, immediate results without email
  • Built from personal need: creator did his own calculations after a misleading sales pitch
  • Comprehensive research: 384 example households analyzed in 26,112 calculations
  • Shows all calculation assumptions: transparent methodology with public data sources
  • Three separate calibration methods instead of one
  • Independent guides with no payment from brands
  • Honest accuracy limits and cross-checking methods
Community votes00
DR (Domain Rating by Ahrefs)15 −1 (down) since last checkNot checked yet no change since last check
Trust Flow (Majestic)180
Citation Flow (Majestic)2412
Referring domains (Majestic)181

4 details filled in for both companies.

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