| What it does | Free browser-based financial calculators for planning, savings, loans and investing
| Independent calculator to check if a home battery pays for itself in your situation
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
| NL
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - 30 financial calculators covering interest, savings, loans, debt and investing
- Runs entirely in browser with no data sent to servers
- No sign-up or tracking required
- Shows formulas and assumptions for every calculation
- Custom interest rates, returns, and inflation rates
- Multiple currency formats supported
- Real-time result updates as values change
| - 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
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| What makes it different | - Private by design - all calculations stay on your device
- No sign-up required to use any calculator
- Instant calculations as you adjust your inputs
| - 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
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 34 ● no change since last check | 16 ● no change since last check |
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| Trust Flow (Majestic) | 11 | 18 |
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| Citation Flow (Majestic) | 24 | 24 |
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| Referring domains (Majestic) | 123 | 18 |
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Quotelyo
Eerlijk over Thuisbatterijen