# DC Battery Life Calculator Free > Calculates estimated battery run-time and discharge times based on capacity and load. (iPhone/iPad app by Kris Arndt.) - Source: https://appshunter.io/ios/app/dc-battery-life-calculator-free/id928168320 (this page in markdown: same URL + `.md`) - Developer: [Kris Arndt](https://appshunter.io/developer/402131114) - Category: Utilities, Lifestyle - Price: Free - Rating: 1.00/5 from 2 App Store ratings · 4 written reviews indexed - Age rating: 4+ - Requires: iOS 6.0 · 34 MB - Languages: English - Released: 2014-11-18 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/dc-battery-life-calculator-free/id928168320/reviews.md ## What is DC Battery Life Calculator Free? This is a simple tool to help calculate the estimated run-time* of your battery or battery bank under a given load. By entering the Rated Battery Capacity, measured in amp hours (symbol: Ah) and applied load i.e. Discharge Rate, measured in amperage or amps for short (symbol: A), you can calculate the Actual Battery Capacity at that load plus how much time it takes to discharge to the batteries to safe levels 25% - 50%, (green and yellow) and to the levels at which you may be damaging the battery (orange, red, deep red). The calculator also takes into consideration PEUKERT'S Law. If you happen to have the manufacturers Peukerts Number then you can enter it. Otherwise it's set to 1.1 For a lead–acid battery, the value of is typically between 1.1 and 1.3. For VRSLAB AGM batteries, it generally ranges from 1.05 to 1.15. For GEL batteries from 1.1 to 1.25. For Flooded batteries commonly known as sealed batteries, 1.2 to 1.6. * Due to factors such as age, make and temperature please note that run-times are estimates. ## Key features - Estimate battery run-time - Calculate discharge times to safe levels - Consider Peukert's Law - Input rated battery capacity (Ah) - Input applied load (Amps) ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/dc-battery-life-calculator-free/id928168320/reviews.md ### 1/5 — Did not work for me *2018-01-06, version 1.0.4* No values in the fields ### 5/5 — ari-yo *2016-06-21, version 1.0.2* what does the u.s. iTunes app store have against system optimizer apps, system memory refreshing apps, & battery boosting apps? seriously! every time i find one that does it all, inevitably the app store phases it out. these types of utilities are readily available in every other store, but not in the u.s. store. it's as though apple doesn't want it's customers to be able to enjoy the benefits of this type of utility, and they don't have the right to decide that for their customers. (and yet they have done just that) hasn't anyone out there noticed this? i cannot be the only person. ### 1/5 — Battery life Calculatot *2015-09-16, version 1.0.0.* Purchased, just shows colored bars. Fix it or credit my money back. If you want to stay on Apple, you better make this right. Do not buy. Total ripoff -5 Stars. ### 2/5 — Unusable *2015-07-12, version 1.0.0.* Not showing any details in the colored boxes of what values represent since the iOS Update. ## Frequently asked questions about DC Battery Life Calculator Free ### What is DC Battery Life Calculator Free used for? DC Battery Life Calculator Free is a tool designed to estimate the operational run-time of a battery or battery bank under a specific load. It helps users understand how long their battery will last based on its capacity and the rate at which it's being discharged. ### How does DC Battery Life Calculator Free estimate battery life? It calculates estimated run-time by taking the Rated Battery Capacity (in amp hours) and the applied load (in amperage) as inputs. The tool then determines the Actual Battery Capacity at that load and estimates the time it takes to discharge the battery to safe levels. ### Does DC Battery Life Calculator Free account for battery type? Yes, the calculator takes into consideration Peukert's Law, which is particularly relevant for lead-acid batteries. It allows users to input the manufacturer's Peukert's Number or uses a default value, with typical ranges provided for different battery chemistries like AGM, GEL, and Flooded. ### Are the run-time estimates from DC Battery Life Calculator Free exact? No, the run-times provided by DC Battery Life Calculator Free are estimates. Factors such as battery age, make, and ambient temperature can influence actual performance, meaning the calculated values are not guaranteed to be precise. ### What is the age rating for DC Battery Life Calculator Free? DC Battery Life Calculator Free has an age rating of 4+. This indicates that the content is generally suitable for all ages, with no mature themes or potentially disturbing material. ### On which devices can DC Battery Life Calculator Free be used? DC Battery Life Calculator Free is available for Apple devices, specifically iPhones and iPads. It is designed to run on these iOS-powered platforms. ### How often is DC Battery Life Calculator Free updated? The application was last updated on November 22, 2016, with version 1.0.4. The initial release date was November 18, 2014. This suggests infrequent updates in recent years. ### What is the user sentiment for DC Battery Life Calculator Free? Based on the provided data, DC Battery Life Calculator Free has a rating of 1.0 stars from 2 ratings. This indicates a very low user satisfaction and suggests significant issues reported by its limited user base. ## Version history (last 1 release) ### 1.0.4 — 2016-11-22 This app has been updated by Apple to display the Apple Watch app icon. - Fixed display issues. ## Apps similar to DC Battery Life Calculator Free | App | Rating | Price | Category | | --- | --- | --- | --- | | [SenserAlign](https://appshunter.io/ios/app/senseralign/id1254219811) | 5.0 (4) | Free | Utilities | | [Battery Fixit](https://appshunter.io/ios/app/battery-fixit/id1448671456) | 2.4 (7) | Free | Utilities | | [Flash Track - Quality Tracking](https://appshunter.io/ios/app/flash-track-quality-tracking/id1211143020) | 2.5 (2) | Free | Utilities | | [Battery Master 12V](https://appshunter.io/ios/app/battery-master-12v/id1480710112) | 3.4 (5) | Free | Utilities | | [Solar Calculator The Original](https://appshunter.io/ios/app/solar-calculator-the-original/id1307247788) | 3.7 (6) | Free | Utilities | | [Battery Life checker](https://appshunter.io/ios/app/battery-life-checker/id1415060885) | 4.0 (148) | Free | Utilities | ## More apps by Kris Arndt - [E.G. Chess Free](https://appshunter.io/ios/app/eg-chess-free/id862043592) All apps by Kris Arndt: https://appshunter.io/developer/402131114 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*