Know Your Battery’s Real Capacity—In Seconds
The KG Series Bluetooth Battery Coulomb Meter (models KG110F 100 A, KG140F 400 A & KG160F 600 A) delivers laboratory-grade Amp-hour and Watt-hour tracking for any 0-120 V battery bank. Check live data on the 2.4″ color LCD or in the free Android/iOS app—complete with exportable history curves.
Key Advantages
- 📊 All-In-One Metrics — Voltage, current, power, capacity %, elapsed time & temperature updated every second.
- 📱 10 m Bluetooth App — Rename devices, download CSV logs & push OTA firmware upgrades.
- ⚡ High-Current Shunts — Pure-copper shunts for 100 A / 400 A / 600 A continuous loads.
- 🛡️ Custom Protection — Adjustable over-/under-voltage, bidirectional over-current & over-temperature (external relay).
- 🔌 Wide Chemistry Support — Lead-acid, LiFePO4, NCM, LTO & custom packs.
- 🔄 RS-485 Open Protocol — Integrate up to 99 meters with PLC, BMS or Home-Assistant.
- 🌙 Ultra-Low Standby 0.4 W — Won’t drain seasonal battery banks.
Perfect For
- 🏕️ RV / camper-van solar systems
- 🔋 Off-grid cabin & backyard powerwalls
- 🚢 Marine house batteries & trolling motors
- 🚜 Forklifts, AGVs & warehouse tuggers
- ⚡ DIY EV & golf-cart conversions
Technical Specifications
| Parameter | KG110F | KG140F | KG160F |
|---|---|---|---|
| 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 | ||
| Voltage Resolution | 0.01 V | ||
| Current Resolution | 0.01 A | 0.1 A | 0.1 A |
| Sampling Rate | 1 Hz | ||
| Accuracy (V/I) | ±2 % FS / ±5 % FS | ||
| Bluetooth Distance | ≈10 m (BLE 4.2) | ||
| Standby Consumption | ≤0.4 W (module) / 0.5 W (display) | ||
| Operating Temp. | -20 ℃ – +50 ℃ | ||
What’s in the Box?
- Display module ×1
- Measuring module & copper shunt ×1
- 3 m communication cable & wiring harness
- External temperature probe ×1
- Mounting plate, screws & spacers
- User manual + RS-485 protocol sheet
FAQs
Does it support 48 V LiFePO4 banks?
Yes—any pack between 10 V and 120 V is supported. Enter your rated capacity in the app for accurate %SOC.
How do I reset Amp-hour counters?
Hold the OK key for 3 seconds or tap “Clear Data” in the app.
Can I log data in Home-Assistant?
Absolutely. Use the RS-485 Modbus protocol or a BLE-MQTT bridge to stream live values.