See Your Battery’s True State-of-Charge—Anywhere
The KH Series Bluetooth Battery Coulomb Meter delivers laboratory-grade Amp-hour (Ah) & Watt-hour (Wh) tracking for any 0-120 V battery bank. View data on the 2.4″ HD color screen or in the free mobile app—complete with real-time curves and exportable history.
Key Advantages
- 📊 Comprehensive Metrics — Voltage, current, power, capacity %, elapsed time & temperature updated every 1 s.
- 📱 Bluetooth App Control (10 m) — Rename devices, set alarms & download logs to CSV for analysis.
- ⚡ High-Current Options — Choose 100 A, 400 A or 600 A pure-copper shunt versions.
- 🔒 Multi-level Protection — Over-/under-voltage, over-current, over-temperature with user-defined recovery delays.
- 🔌 Wide Chemistry Support — Lead-acid, LiFePO4, NCM, LTO & custom packs.
- 🛠️ Open RS-485 Protocol — Integrate up to 99 meters into PLC, BMS or Home-Assistant projects.
- 🌙 Ultra-Low Standby 0.4 W — Won’t drain seasonal batteries.
Where It Excels
- RV & camper van solar systems
- Off-grid cabin / boat house energy storage
- Golf carts, e-bikes & small EV conversions
- Forklifts & warehouse AGVs
- Marine house battery banks & trolling motors
- DIY powerwalls / server-rack LiFePO4 projects
Technical Specifications
| Model | KH110F | KH140F | KH160F |
|---|---|---|---|
| Current Range | 0-100 A | 0-400 A | 0-600 A |
| Voltage Range (ext. supply) | 0-120 V | ||
| Voltage Range (self-powered) | 10-120 V | ||
| Accuracy | ±1 % FS | ||
| Sampling Rate | 1 Hz | ||
| Comms | Bluetooth 4.2 + RS-485 (open protocol) | ||
| Standby Draw | < 0.4 W | ||
| Operating Temp | -20 – 50 ℃ | ||
What’s In the Box?
- Display module ×1
- Shunt & measuring module ×1
- Sampler & cables (5 m) ×1 set
- External temperature probe ×1
- User manual & open-source protocol sheet ×1
FAQs
Does it work with 48 V LiFePO4 packs?
Yes—any battery between 10-120 V is supported. Simply enter the rated capacity in the app.
How do I reset Amp-hour counting?
Hold the OK button for 3 s or tap “Clear Data” in the app dashboard.
Can I view data in Home-Assistant?
Absolutely. Use the open RS-485 protocol or a Bluetooth BLE MQTT bridge to stream live values.