Solar Battery Sizer
NEC 706 ESS Sizer
$0.99 · In‑App Purchases · Designed for iPad. Not verified for macOS.
Solar Battery Sizer - professional NEC calculator for electricians. Offline, permit-ready.
Solar Battery Sizer helps solar energy professionals design battery banks for off-grid and hybrid PV systems per NEC Article 706.
# Features
- Daily energy consumption (kWh) and days of autonomy
- Multiple battery chemistries: LFP, lead-acid AGM, lead-acid flooded, NMC
- System voltage selection: 12V, 24V, 48V
- Depth of discharge (DoD) per chemistry defaults
- Round-trip efficiency factor
- Temperature derating factor
- Required capacity in kWh and Ah
- Number of batteries and total system cost estimation
- Usable energy after DoD and efficiency losses
# Standards
- NEC Article 706 (Energy Storage Systems)
- Industry-standard chemistry defaults
# For
Solar installers, off-grid system designers, electrical contractors, EPC engineers, students preparing for NABCEP exam.
# Optional Pro Upgrade - $2.99 one-time in-app purchase
Pro unlocks history of saved calculations, dark mode, PDF export, and removes ads. One-time purchase.
OPTIONAL PRO UPGRADE - $2.99 ONE-TIME IN-APP PURCHASE
The following features require a separate one-time in-app purchase. They are not required to use the calculator:
- Unlimited saved calculation history
- PDF export of results
- Dark theme
- Ad-free experience
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Fixed cross-app links: tapping another SolarTools app in More Tools now opens its App Store page on iPhone and iPad.
- Minor stability improvements.
The developer, Rizvan Adzhoian, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Rizvan Adzhoian
- Size
- 34.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
18+
- 18+
- Contains
Advertising
- In-App Purchases
Yes
- Pro Unlock $2.99
- Copyright
- © 2026 Rizvan Adzhoian