--- product_id: 84308868 title: "AiLi Battery Monitor DC 300V 100A Voltmeter Ammeter Voltage Amp Meter Gauge with Hall Effect Sensor Transformer" brand: "aili" price: "¥14449" currency: JPY in_stock: true reviews_count: 7 category: "Aili" url: https://www.desertcart.jp/products/84308868-aili-battery-monitor-dc-300v-100a-voltmeter-ammeter-voltage-amp store_origin: JP region: Japan --- # 300V max voltage 999Ah capacity monitoring 100A bidirectional current AiLi Battery Monitor DC 300V 100A Voltmeter Ammeter Voltage Amp Meter Gauge with Hall Effect Sensor Transformer **Brand:** aili **Price:** ¥14449 **Availability:** ✅ In Stock ## Summary > 🔋 Stay charged, stay ahead — monitor your power like a boss! ## Quick Answers - **What is this?** AiLi Battery Monitor DC 300V 100A Voltmeter Ammeter Voltage Amp Meter Gauge with Hall Effect Sensor Transformer by aili - **How much does it cost?** ¥14449 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/84308868-aili-battery-monitor-dc-300v-100a-voltmeter-ammeter-voltage-amp) ## Best For - aili enthusiasts ## Why This Product - Trusted aili brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety-First Design:** Electrically isolated sensor eliminates risk to your gear and keeps you worry-free. - • **Smart Power Management:** Self-powered from 5-90V DC, with reverse polarity protection and backlight for any condition. - • **Universal Compatibility:** Monitors up to 999Ah battery banks—perfect for motorhomes, solar setups, and more. - • **Comprehensive Battery Insights:** Track voltage, current, power, and energy like a pro with a crisp STN LCD display. - • **Effortless Through-Hole Installation:** No wiring headaches—plug & play with zero current direction limits. ## Overview The AiLi Battery Monitor DC 300V 100A is a cutting-edge gauge featuring a through-hole Hall Effect sensor for safe, non-intrusive current measurement. It delivers real-time data on voltage, current, power, and battery capacity up to 999Ah, displayed on a clear STN LCD screen. Designed for easy installation and universal battery compatibility, it empowers millennial professionals to optimize energy use and extend battery life with confidence. ## Description Key Feature This Battery Monitor is designed to monitor performance most kind of battery systems with capacities of up to 999 Amp hours. Read your battery bank like a fuel gauge. Battery Status At A Glance. STN Full view LCD screen. Combines many functions in one, these information leads to more efficient use of the battery, which can enhance battery life and reduce the risk of failure. State of Charge (%),The remaining battery capacity (AH). Charge and discharge current (A), Voltage (V). Power (W), Energy (WH/KWH). Charging status indicator, looks like a smartphone. Come with a Through-hole Current transformer, it doesn't require shunt. The current sensor can be placed on the Positive or Negative side of power. Reverse polarity protection. Doesn't require isolated power, self-powered 5-90V. Nondestructive installation, it is very easy to install. Technical Specification Power Supply 5~90Vdc Voltage Range 0~300V Current Range -100.0A ~ +100.0 A Energy Range 0~999KWH Power Range 0~999KW Capacity Range 0-999AH Resolution 0.1V, 0.1A, 0.1AH, 0.1W, 1WH Display Type STN Full view LCD screen Sensor hole dimeter 20mm Dimensions 79mm*42*22.2mm Panel Cut-out 72mm*39mm The auction includes 1 × Battery monitor 1 × Current transformer 1X 2 meters long cable 1 × English operation manual Review: Battery condition meter... - I have installed this product in my motorhome battery box. I require to know the load I am taking from my leisure battery when I don’t have a 240VAC hookup. I have solar panels fitted but this meter does not show the charge rate as that information is available on the controller inside the van. The hall sensor seems to work ok even though I’m at a very low end of the capacity of the meter, 100amps max. The max load I will take is about 10amps and that includes the water pump running intermittently. The pump takes about 3amps. The normal loading during the evening when you require led lights, tv, gas heater fan, if cold will not exceed 10amps I hope. Trials still to be carried out. It would have been preferable to fit the meter inside the van to view the load real time, however it is not possible as I have no spare space to mount the instrument. At least I know now which lights not to use to keep the load down. I haven’t taken into account iPad, iPhone charging at present. I am looking at a separate solar charge system to take care of that aspect. The instruction leaflet is basic, but the price of £32 is ok as far as I’m concerned. An instrument with a shunt might be more accurate but I could not fit one due to the size of my installation. There is more info on the meter than I personally require, all I really wanted was the load taken, a bonus is when the system is switched off when motoring the meter will show the charge amperage back to the battery. The meter is live all the time as it is directly connected to the battery, no switch facility, the load to power the meter is negligible, there is a back light function if it is dark. All in all it would appear to be satisfactory, time will tell. If tried to post a photo but it won’t work!! Review: Great when works - Really easy to install. Having some issues with the connection between the reader and reading device. Seems to be working again now, but if it plays up will he contacting the seller for a replacement as when it’s working it really is good. I use it in my camper van and very useful for monitoring the leisure battery. ## Features - Through-hole design: No wiring difficulty. Measure positive or negative current. No current direction limitation. - Electrically isolated from high voltage power source which eliminates risk to delicate monitoring equipment and also minimizes safety concerns. - This Battery Monitor is designed to monitor performance most kind of battery systems with capacities of up to 999 Amp hours. - Read your battery bank like a fuel gauge.Battery Status At A Glance.STN Full view LCD screen. - Nondestructive installation, it is very easy to install. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07D31K454 | | Best Sellers Rank | 623,625 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,099 in Voltage Testers | | Brand | AILI | | Colour | Black | | Customer Reviews | 4.0 out of 5 stars 96 Reviews | | Item Weight | 0.14 Kilograms | | Item weight | 0.14 Kilograms | | Manufacturer | Elite Element | | Manufacturer Part Number | UK-300V100A-FBA | | Maximum Operating Voltage | 300 Volts | | Measurement Type | Ammeter | | Min. Operating voltage | 5 Volts (DC) | | Minimum Operating Voltage | 5 Volts (DC) | | Model Number | UK-300V100A-FBA | | Number of Items | 1 | | Power Source | DC | | Power source | DC | | Specification Met | CE, EN 61010-1 | | Style | Modern | | Style Name | Modern | | UPC | 732140378304 | ## Product Details - **Brand:** AILI - **Power source:** DC - **Style:** Modern - **Item weight:** 0.14 Kilograms - **Min. Operating voltage:** 5 Volts (DC) ## Images ![AiLi Battery Monitor DC 300V 100A Voltmeter Ammeter Voltage Amp Meter Gauge with Hall Effect Sensor Transformer - Image 1](https://m.media-amazon.com/images/I/615XvyphopL.jpg) ![AiLi Battery Monitor DC 300V 100A Voltmeter Ammeter Voltage Amp Meter Gauge with Hall Effect Sensor Transformer - Image 2](https://m.media-amazon.com/images/I/61U6h3NoUXL.jpg) ![AiLi Battery Monitor DC 300V 100A Voltmeter Ammeter Voltage Amp Meter Gauge with Hall Effect Sensor Transformer - Image 3](https://m.media-amazon.com/images/I/71jFxQtJUbL.jpg) ![AiLi Battery Monitor DC 300V 100A Voltmeter Ammeter Voltage Amp Meter Gauge with Hall Effect Sensor Transformer - Image 4](https://m.media-amazon.com/images/I/71eDdM8Yr1L.jpg) ![AiLi Battery Monitor DC 300V 100A Voltmeter Ammeter Voltage Amp Meter Gauge with Hall Effect Sensor Transformer - Image 5](https://m.media-amazon.com/images/I/71XozALanNL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: How longa are the wires and cables?** A: The sensor come with 2 meters long cable, factory can customize longer cable. **Q: I just received this and there is no install instructions for automotive car install. Do the black and red leads connect to 12 volts source voltage?** A: I think there are 2 ways to wire. 1, from a power source 2, from the induced power from hall tranformer. Look at Web sitell it shows schmatic. **Q: Does this version Have ability to reset ah and kwh?** A: This battery tester/gauge is just a display device. If you remove the monitored voltage/current the meter automatically resets it self. Actually it just turns off and when you reapply the voltage/current it will show the new data for the system you are monitoring. Hope this helps! **Q: will I need two being I’m using a battery isolator for my two batteries for my audio system?** A: If you are isolating each battery from the other then the I think that the answer is yes. You would need 2 to be able to read each battery independently. ## Customer Reviews ### ⭐⭐⭐⭐ Battery condition meter... *by C***E on 25 June 2020* I have installed this product in my motorhome battery box. I require to know the load I am taking from my leisure battery when I don’t have a 240VAC hookup. I have solar panels fitted but this meter does not show the charge rate as that information is available on the controller inside the van. The hall sensor seems to work ok even though I’m at a very low end of the capacity of the meter, 100amps max. The max load I will take is about 10amps and that includes the water pump running intermittently. The pump takes about 3amps. The normal loading during the evening when you require led lights, tv, gas heater fan, if cold will not exceed 10amps I hope. Trials still to be carried out. It would have been preferable to fit the meter inside the van to view the load real time, however it is not possible as I have no spare space to mount the instrument. At least I know now which lights not to use to keep the load down. I haven’t taken into account iPad, iPhone charging at present. I am looking at a separate solar charge system to take care of that aspect. The instruction leaflet is basic, but the price of £32 is ok as far as I’m concerned. An instrument with a shunt might be more accurate but I could not fit one due to the size of my installation. There is more info on the meter than I personally require, all I really wanted was the load taken, a bonus is when the system is switched off when motoring the meter will show the charge amperage back to the battery. The meter is live all the time as it is directly connected to the battery, no switch facility, the load to power the meter is negligible, there is a back light function if it is dark. All in all it would appear to be satisfactory, time will tell. If tried to post a photo but it won’t work!! ### ⭐⭐⭐ Great when works *by B***. on 2 January 2020* Really easy to install. Having some issues with the connection between the reader and reading device. Seems to be working again now, but if it plays up will he contacting the seller for a replacement as when it’s working it really is good. I use it in my camper van and very useful for monitoring the leisure battery. ### ⭐⭐⭐⭐⭐ Works Well *by B***N on 9 July 2019* This is a very cool battery monitor. It comes with a one page instruction sheet. It's pretty easy to set up. In the settings, the maximum amp-hour you can set is 99.9, not 999.9 as the instructions indicate. Luckily it'll detect how big your battery is after you've completed the setup. You need to run your battery all the way down and then recharge it and it'll display how many AH are available. I bought a 25 foot shielded, 6 wire twisted pair cable and was able to extend the cable that came with it by that much. It seems to work just fine after the extension. ## Frequently Bought Together - AiLi Battery Monitor DC 300V 100A Voltmeter Ammeter Voltage Amp Meter Gauge with Hall Effect Sensor Transformer - Klein Tools MM325 Multimeter, Digital Manual-Ranging 600V AC/DC Voltage Tester, Tests Batteries, Current, Resistance, Diodes, and Continuity - Mighty Max Battery ML5-12 - 12 Volt 5 AH Rechargeable SLA Battery - Mighty Max Brand Product --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/84308868-aili-battery-monitor-dc-300v-100a-voltmeter-ammeter-voltage-amp](https://www.desertcart.jp/products/84308868-aili-battery-monitor-dc-300v-100a-voltmeter-ammeter-voltage-amp) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-13*