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.
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Free Shipping
Under normal circumstances we offer free shipping on all orders, you will see the free shipping option in your cart at checkout. There is no choice of carrier for free shipping, but typically we will ship your order will likely ship using either USPS or FedEx. Full Shipping Policy
Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.). Full Returns Policy
When Will My Order Ship?
For Standard Shipping, we aim to pack and ship out your order within 3 business days. During special periods, such as heavy order processing or local inventory shortages that require deployment, please expect it to take an additional day or two for processing.
We ship five days a week, Monday through Friday. Sometimes our mail pickup comes in early afternoon, so tracking for orders shipped later that day may not update until the following business day.
You will receive a shipment confirmation with tracking information via email when your order has shipped. Once you receive this email, we cannot change or cancel your order.
Can I Change The Shipping Address On My Order?
Please contact us immediately via email if you realize that you gave us the wrong shipping address — if it hasn't shipped yet, we might be able to correct it before it goes out the door.If your order ships to the address provided and is returned to us as undeliverable, then you are responsible for paying the cost of shipping again to resend it to you. If you decide you do not want your order reshipped, we'll refund you for the products less the original shipping charges, once your order returns to our warehouse. We'll reach out to you to coordinate your options before re-shipping.
If your order ships to an incorrect address provided at the time the order is placed and is not retrievable, we are not responsible and cannot offer reimbursement.
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