# Nasa BM-1 Battery Monitor

> Bluetooth battery monitor for 12V lead-acid systems, displaying voltage and current. (iPhone/iPad app by Norden Logic Oy.)

- Source: https://appshunter.io/ios/app/nasa-bm-1-battery-monitor/id1079855058 (this page in markdown: same URL + `.md`)
- Developer: [Norden Logic Oy](https://appshunter.io/developer/951640439)
- Category: Utilities, Navigation
- Price: $5.99
- Age rating: 4+
- Requires: iOS 12.0 · 14 MB
- Languages: English
- Released: 2016-06-01
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/nasa-bm-1-battery-monitor/id1079855058/reviews.md

## What is Nasa BM?

Nasa BM-1 Wireless Battery Monitor

The NASA BM1(BT) Bluetooth battery monitor hardware (sold separately) is supplied complete with a 100 Amp 50mV shunt and all necessary cables to connect to the main service battery. It is intended to monitor a 12 volt lead-acid battery, or bank of batteries, with a total capacity between 5 and 600 Ampere-hours (Ahr).

The information is transmitted using Low Energy Bluetooth (Bluetooth 4.x or higher) and can be viewed on any compatible device running Apple iOS 9.x and WatchOS 2.x.

## Key features

- Real-time voltage and current monitoring
- Bluetooth 4.x+ connectivity
- Supports 12V lead-acid batteries
- Monitors 5-600 Ah capacity
- iOS and watchOS compatible

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/nasa-bm-1-battery-monitor/id1079855058/reviews.md

### 1/5 — Funktioniert leider nicht mehr

*2023-04-17*

App öffnet nicht richtig. Dementsprechend nutzlos.

### 1/5 — Bluetooth-Verbindung mit iPhone und iOS 13.5.1 nicht möglich

*2020-06-23*

Funktioniert nur auf meinem iPad mit iOS 13.5. Auf dem iPhone stürzt die App bei dem Verbindungsversuch ab. Darauf achten, dass man die Verbindung aus der App herstellen muss und nicht über die Bluetooth-Einstellungen. Funktioniert der Monitor bei irgendwem auf einem iPhone?

### 1/5 — Doesn’t work.

*2020-06-18, version 1.0.6*

This app doesn’t connect to the BM-1 unit on iOS 13.5.1 and iPhone 8.
Pressing the icons top right on the respective Performance and Batteries pages crashes the app. Issue confirmed by NASA support.

### 2/5 — Usability poor

*2020-05-21, version 1.0.5*

Hi

I have this app and the stats that are available are very poor from a usability perspective. 
It would be nice if you could improve the stats on the BM-1 BT app. They are very difficult to use on the iphone as the scrolling moves you to the next view rather than the data for the period.

Can you confirm what is happening in future releases please?

## Frequently asked questions about Nasa BM

### Does Nasa BM-1 have ads?

No, Nasa BM-1 does not contain advertisements. It is a paid application with a one-time purchase price of $5.99.

### What devices is Nasa BM-1 compatible with?

Nasa BM-1 is compatible with iPhone, iPad, and iPod devices running iOS 9.x and later, as well as Apple Watch devices running watchOS 2.x and later.

### What is the battery capacity range for Nasa BM-1?

Nasa BM-1 is designed to monitor 12-volt lead-acid battery banks with a total capacity ranging from 5 to 600 Ampere-hours (Ahr).

### Does Nasa BM-1 require separate hardware?

Yes, the Nasa BM-1 app requires the NASA BM1(BT) Bluetooth battery monitor hardware, which is sold separately, to function.

### How often is Nasa BM-1 updated?

The latest version of Nasa BM-1 is 1.0.9, and it was last updated on March 17, 2022. Updates typically address bug fixes and performance improvements.

### What type of batteries does Nasa BM-1 monitor?

Nasa BM-1 is intended for monitoring 12-volt lead-acid batteries or banks of batteries.

### What information does Nasa BM-1 display?

Nasa BM-1 displays real-time voltage and current data transmitted from the connected Bluetooth battery monitor hardware.

### What is the age rating for Nasa BM-1?

Nasa BM-1 has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 5 releases)

### 1.0.9 — 2022-03-17

Fixed dark mode color scheme

### 1.0.8 — 2022-01-28

Updated to iOS 15

### 1.0.7 — 2020-06-23

Fixed iOS 13 Bluetooth LE permission bug

### 1.0.6 — 2020-06-05

Updated for iOS 13

### 1.0.5 — 2019-03-19

- Added Power Consultant showing typical power consumption of a boat
- Fixed some minor layout issues on iPhone 5s

## More apps by Norden Logic Oy

- [iCEVNI EU Waterways](https://appshunter.io/ios/app/icevni-eu-waterways/id951640440)
- [Nasa NavTex BT LE](https://appshunter.io/ios/app/nasa-navtex-bt-le/id1187291449)

All apps by Norden Logic Oy: https://appshunter.io/developer/951640439

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*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.*