--- product_id: 166027642 title: "HiLetgo 14.8V 4S 30A 18650 Li-ion Lithium Battery BMS PCB Integrated Circuits Protection Board Cell Balance" brand: "hiletgo" price: "VT3003" currency: VUV in_stock: true reviews_count: 5 category: "Hi Letgo" url: https://www.desertcart.vu/products/166027642-hiletgo-14-8v-4s-30a-18650-li-ion-lithium-battery store_origin: VU region: Vanuatu --- # 30A max discharge current 14.8V nominal voltage (4S Li-ion) Multi-layer protection system HiLetgo 14.8V 4S 30A 18650 Li-ion Lithium Battery BMS PCB Integrated Circuits Protection Board Cell Balance **Brand:** hiletgo **Price:** VT3003 **Availability:** ✅ In Stock ## Summary > 🛠️ Power your projects with precision and protection — never settle for less! ## Quick Answers - **What is this?** HiLetgo 14.8V 4S 30A 18650 Li-ion Lithium Battery BMS PCB Integrated Circuits Protection Board Cell Balance by hiletgo - **How much does it cost?** VT3003 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/166027642-hiletgo-14-8v-4s-30a-18650-li-ion-lithium-battery) ## Best For - hiletgo enthusiasts ## Why This Product - Trusted hiletgo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Cell Balancing:** 60mA balancing current maintains battery health and extends pack lifespan by equalizing cell voltages. - • **Powerhouse Performance:** Supports a robust 30A continuous discharge current for high-demand applications. - • **Compact & Durable Design:** Slim 56x48x4mm PCB crafted with fine workmanship for seamless integration and long-lasting use. - • **Precision Voltage Control:** High-accuracy voltage detection ensures optimal charging at 16.8-18V with fine-tuned balance. - • **Comprehensive Safety Suite:** Integrated overcharge, over-discharge, short circuit, and overcurrent protections keep your battery pack safe and reliable. ## Overview The HiLetgo 14.8V 4S 30A Li-ion Battery BMS PCB is a compact, high-performance protection board designed for 18650 lithium battery packs. It delivers up to 30A continuous current with advanced multi-protection features including overcharge, over-discharge, short circuit, and overcurrent safeguards. Its precise voltage detection and 60mA cell balancing current ensure optimal battery health and longevity, making it an essential component for reliable, high-capacity battery assemblies. ## Description Specifications: Working current: 30A Balanced current: 60mA Over current: 56A Temperature range: -20 - +80℃ Over charge detection voltage: 4.28+ 0.05 V Over charging voltage: 4.2-4.195V Over discharge voltage: 2.5±0.08 Over charge detection delay time: 0.1s Short circuit detection delay time: 100ms Over current detection delay time: 500 ms Interface definition: Charging port of the plate and the discharge port is the same, both positive and B- connecting battery"-", P- charging port and port on the negative electrode; B-, N-, P- pads are all over the hole, the hole diameter of the pad is 3.5mm; The battery charging detection interface with DC output in the form of needle. Do the same mouth when the N- is not wiring. Package Include: 1 x 14.8V Li-ion Lithium 18650 Battery BMS Packs PCB Protection Board Review: works well for me - So far, so very good (April 10th, 2024). As far as I can tell this BMS works as advertised. Setup: I ordered two of these BMSs to create two 4S, 3P lithium battery packs with 14.8V nominal voltage, using for each pack twelve 2,500 mAh LMC cells with each 3.7V nominal voltage (4.2V max) and 10A max discharge rate per cell. The voltage of one 100% charged battery pack is 16.8V and the capacity is 7,500 mAh. The maximum discharge current of 3 cells in parallel is 30A which is what the BMS is rated for. I did the wiring successful using the wiring diagrams from the desertcart pictures. In my application, one battery pack consists of of 4 units of 3 parallel cells. The instructions that came with the BMS were not so helpful but the pictures from desertcart explained everything. Charging: I am using an 18V, 2.7A power supply to charge the two packs connected in parallel. I fried a 12V, 2A powersupply (it got too hot during 1 hour of charging while providing 2.7A), so I found and bought a slightly more capable powersupply that was just right (max current eated at 2.7 A). I verified that the charging cut-off mechanism of the BMS is activated at a battery pack voltage of 16.7-16.8V which is just right at 100% charge. So charging working great now. Discharging: I connected both packs in parallel, hopefully giving me a total of 60A maximum discharge current at 16.8 V maximum voltage, or 1,008 watts of max power. I have only tested low discharge currents of up to 2 ampere so far, and that has worked well. The bms is rated for up to 30 ampere discharge, which I intend to test in future. Review: Best deal ever! - Well build. Easy to use, keep in mind that there is two ways to wire it to your battery assembly, but both ways work wonderful. There is no indicator of fully charge unless you add one. Really happy with this product. ## Features - 14.8V 4S 30A 18650 Li-ion Lithium Battery BMS PCB Integrated Circuits Protection Board Cell Balance. - High-accuracy voltage detection circuit, fine workmanship and durable. - Working current: 30A .Charging voltage: 16.8V-18V,the best is 17v.Size:56*48*4mm. - Main function: Over charge protection, over discharge protection function, short circuit protection function, over current protection function, balance. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07X28845M | | Best Sellers Rank | #198,571 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #792 in Power Converters | | Brand | HiLetgo | | Color | green black | | Customer Reviews | 4.0 4.0 out of 5 stars (124) | | Input Voltage | 4.2 Volts | | Item Weight | 0.02 Kilograms | | Manufacturer | HiLetgo | | Mfr Part Number | 3-01-1548 | | Model Number | 3-01-1548 | | Output Voltage | 17 Volts (DC) | | Plug Type | Micro USB | ## Product Details - **Brand:** HiLetgo - **Color:** green black - **Input Voltage:** 4.2 Volts - **Item Weight:** 0.02 Kilograms - **Output Voltage:** 17 Volts (DC) ## Images ![HiLetgo 14.8V 4S 30A 18650 Li-ion Lithium Battery BMS PCB Integrated Circuits Protection Board Cell Balance - Image 1](https://m.media-amazon.com/images/I/71L56a0kTsL.jpg) ![HiLetgo 14.8V 4S 30A 18650 Li-ion Lithium Battery BMS PCB Integrated Circuits Protection Board Cell Balance - Image 2](https://m.media-amazon.com/images/I/61cqRsIYDsL.jpg) ![HiLetgo 14.8V 4S 30A 18650 Li-ion Lithium Battery BMS PCB Integrated Circuits Protection Board Cell Balance - Image 3](https://m.media-amazon.com/images/I/71j717LNVGL.jpg) ![HiLetgo 14.8V 4S 30A 18650 Li-ion Lithium Battery BMS PCB Integrated Circuits Protection Board Cell Balance - Image 4](https://m.media-amazon.com/images/I/61+kf8bMInL.jpg) ![HiLetgo 14.8V 4S 30A 18650 Li-ion Lithium Battery BMS PCB Integrated Circuits Protection Board Cell Balance - Image 5](https://m.media-amazon.com/images/I/61f+pjg7tUL.jpg) ## Questions & Answers **Q: Hi all: are the t1,t2 terminals for a temp sensor? if so, what kind of sensor and what is the operational range.** A: There is no manual or any instruction about it, I googled similar boards and also Alibaba/Aliexpress. The only hit - its usually 10k thermistor (look for ntc 10k) and you have to remove smd jumper (0 Ohm) right near these terminals). I did not manage to find any documentation. **Q: Will this bms work with 18650 3.2v lifepo4 batteries?** A: No. Only work with 4.2v **Q: Does it come with the pigtail?** A: Yes, this item contained the pigtail. **Q: Can this bms board handal 16 pack 4x4 solar storage parallel about 40 4s 16 cells in each pack** A: Mine melted ## Customer Reviews ### ⭐⭐⭐⭐⭐ works well for me *by H***. on April 10, 2024* So far, so very good (April 10th, 2024). As far as I can tell this BMS works as advertised. Setup: I ordered two of these BMSs to create two 4S, 3P lithium battery packs with 14.8V nominal voltage, using for each pack twelve 2,500 mAh LMC cells with each 3.7V nominal voltage (4.2V max) and 10A max discharge rate per cell. The voltage of one 100% charged battery pack is 16.8V and the capacity is 7,500 mAh. The maximum discharge current of 3 cells in parallel is 30A which is what the BMS is rated for. I did the wiring successful using the wiring diagrams from the Amazon pictures. In my application, one battery pack consists of of 4 units of 3 parallel cells. The instructions that came with the BMS were not so helpful but the pictures from Amazon explained everything. Charging: I am using an 18V, 2.7A power supply to charge the two packs connected in parallel. I fried a 12V, 2A powersupply (it got too hot during 1 hour of charging while providing 2.7A), so I found and bought a slightly more capable powersupply that was just right (max current eated at 2.7 A). I verified that the charging cut-off mechanism of the BMS is activated at a battery pack voltage of 16.7-16.8V which is just right at 100% charge. So charging working great now. Discharging: I connected both packs in parallel, hopefully giving me a total of 60A maximum discharge current at 16.8 V maximum voltage, or 1,008 watts of max power. I have only tested low discharge currents of up to 2 ampere so far, and that has worked well. The bms is rated for up to 30 ampere discharge, which I intend to test in future. ### ⭐⭐⭐⭐⭐ Best deal ever! *by L***Z on November 30, 2024* Well build. Easy to use, keep in mind that there is two ways to wire it to your battery assembly, but both ways work wonderful. There is no indicator of fully charge unless you add one. Really happy with this product. ### ⭐⭐⭐⭐⭐ You have to plug it in to "wake it up" *by R***E on February 25, 2025* Like most of the reviews, I got the board, wired it up according to the picture with four 18650 battery holders, checked all of the connections with a multimeter, put four fully-charged 18650 batteries into the holders, and expected 14.8V or more at the P+ and P- pins. I was getting 2.1V out and thought that these boards must really be defective like so many of the reviews say. As it turns out, the board requires that you apply power to the P+ and P- pins before it "wakes up". Basically you have to have everything wired up including the charging port that you're going to use wired to the P+ and P- pins, have the batteries in the holders, and then "plug it in" briefly to wake up the board. Just one second of being plugged in will do it. Then you can unplug it and it will keep putting out the full 16V or whatever your input voltage is as long as you don't disconnect the batteries. This means don't put a power switch between the batteries and the board. Wire both the battery holders and the charging port straight to the board so that the board is powered from the batteries all the time. If you want to add a power switch, add it between this board's output and the circuit you're trying to power. ## Frequently Bought Together - HiLetgo 14.8V 4S 30A 18650 Li-ion Lithium Battery BMS PCB Integrated Circuits Protection Board Cell Balance - EASON Stepper Motor Driver TB6600 4A DC9-42V 32 Subdivision for Nema 17, 23 Series Stepper Motor CNC Controller Single Axis Hybrid MicroStepping - DZS Elec 2pcs MP1584EN Mini 3A DC-DC Buck Converter 4.5V-28V to 0.8V-20V Adjustable Voltage Regulator 24V/12V/9V to 12V/5V/3.3V Step-Down Power Module --- ## 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.vu/products/166027642-hiletgo-14-8v-4s-30a-18650-li-ion-lithium-battery](https://www.desertcart.vu/products/166027642-hiletgo-14-8v-4s-30a-18650-li-ion-lithium-battery) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-16*