--- product_id: 275738210 title: "lifepo4 bms 4s 12v" brand: "daly" price: "€ 3.30" currency: EUR in_stock: true reviews_count: 9 url: https://www.desertcart.pt/products/275738210-lifepo4-bms-4s-12v store_origin: PT region: Portugal --- # Bluetooth smart monitoring 100A max current Programmable charge/discharge params lifepo4 bms 4s 12v **Brand:** daly **Price:** € 3.30 **Availability:** ✅ In Stock ## Summary > ⚡ Stay charged, stay connected — the smart BMS your battery deserves! ## Quick Answers - **What is this?** lifepo4 bms 4s 12v by daly - **How much does it cost?** € 3.30 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/275738210-lifepo4-bms-4s-12v) ## Best For - daly enthusiasts ## Why This Product - Trusted daly brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust 100A Capacity:** Handles high current demands with ease for professional-grade battery packs. - • **Seamless Integration:** Compact 4S 12V design fits perfectly in your lithium battery setup with easy installation. - • **Smart Bluetooth Alerts:** Real-time alarms on your phone or PC keep you ahead of battery issues. - • **Precision Power Control:** Customize charge, discharge, voltage & temp limits for ultimate battery safety. - • **Certified Quality Assurance:** ISO, FCC, RoHS, PSE & CE approvals ensure reliable, compliant performance. ## Overview The DALY Smart BMS 4S 12V 100A is a Bluetooth-enabled LiFePO4 battery management system designed for precise control and protection of 12V lithium battery packs. It features programmable charge/discharge parameters, real-time alarm notifications via app or PC, and robust 100A current handling. Certified by ISO, FCC, RoHS, PSE, and CE, it offers professional-grade reliability in a compact form factor, ideal for millennial pros building high-performance energy solutions. ## Description desertcart.com: DALY Smart BMS 4S 12V 100A LiFePO4 PCB Protection Board with Balance Leads, Wires 3.2V Battery Protection Module BMS for 18650 Battery Pack 12V with UART(Smart BMS,100A) : Electronics Review: Defective Product Recieved - Daly 100A 4S Smart BMS - Cell 1 shows about 100mv lower on the app than the measured voltage and bounces around +/- 10mv like a loose internal connection. Everything else in the app works and tested fine but this defect will affect both balancing and low cell cutout protection. I tested the bms on receiving it, but did not notice this defect until the pack was finished, which is too late to return. There is no way to repair these molded bms units. Will do more thorough testing on whatever I use to replace this. UPDATE: 06-08-23 So I ended up buying this again since all the wiring was finished and it was the easy way to move forward. Connected the new BMS to the existing wiring, set the parameters up, and tested it. Everything worked as advertised. A few days ago, Daly reached out to me asking if I had a problem after seeing the review. After I described the problem, they asked for a resistance measurement and then for a picture of the measurement. Three days later, desertcart has refunded the purchase. Given the time difference between here and China, I was impressed at how fast they resolved the problem. Customer service from Daly is far better than I expected. If you live in a cold climate and are using one of these for an outdoor application, be sure to change the cold temperature protection parameter. Charging an LFP battery below freezing will destroy the battery. Overall, this smart BMS has a lot of features for the price, and I would recommend them. Review: A must with lithium. - I've owned multiple daily products and when it comes to regulating big cells of lithium it's recommended utilizing bluetooth. The build quality is solid and it is simple to install once you bolt it down. The Bluetooth has decent range but doesn't like too much interference which will require you to be closer. Functionality is simple and straightforward as long as you possess basic understanding of how to set up lithium battery parameters. Note; recommend setting up your lithium and limiting communications to avoid any form of hacking to the actual battery. Back door to the software could cause overcharging undercharging and that is a concern. Other than that this is a great product that has personally allowed me to create several 1000 amp batteries. ## Features - USA SELLER - Quality Guarantee--- ISO/ FCC/ RoHS/ PSE/ CE APPROVED - {Alarm Reminder}: When Factors Like Temperature, Voltage , Current Cause Negative Affection to Battery , There Will be Alarm Display on Bluetooth Smart BMS APP/ PC Monitoring Program - {Parameters Programmable} ---- Charge And Discharge Protection Current ,Voltage,Temperature Can Be Reset in Certain Range ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08PFPNNJG | | Brand | DALY | | Color | Black | | Customer Reviews | 4.0 4.0 out of 5 stars (54) | | Input Voltage | 3.75 Volts | | Item Dimensions | 2.56 x 6.54 x 0.94 inches | | Item Weight | 395 Grams | | Manufacturer | Dongguan Daly Electronics Co., Ltd | | Model Number | 714216177851 | | Output Voltage | 12 Volts (DC) | | Plug Type | Type A | | UPC | 714216177851 | | Warranty Description | 2 Year Manufacturer | ## Product Details - **Brand:** DALY - **Color:** Black - **Input Voltage:** 3.75 Volts - **Item Weight:** 395 Grams - **Item dimensions L x W x H:** 2.56 x 6.54 x 0.94 inches ## Images ![lifepo4 bms 4s 12v - Image 1](https://m.media-amazon.com/images/I/71TOPP2odnL.jpg) ![lifepo4 bms 4s 12v - Image 2](https://m.media-amazon.com/images/I/71qbH1q8tiL.jpg) ![lifepo4 bms 4s 12v - Image 3](https://m.media-amazon.com/images/I/71A8+CjoLrL.jpg) ![lifepo4 bms 4s 12v - Image 4](https://m.media-amazon.com/images/I/71j7rWKdByL.jpg) ![lifepo4 bms 4s 12v - Image 5](https://m.media-amazon.com/images/I/71xbb7E7+nL.jpg) ## Questions & Answers **Q: Just to be clear, does this bms stop charging the batteries when the bms's ambient temperature reaches -7c?** A: Yes, when the temperature sensor detects ambient temperature reaches -7c, this bms stops charging the batteries. If you have other questions, please let us know, thank you. **Q: I'm a little confused about which chemistry this bms is for. it says 18650 in some places and lifep. does it work with lifepo4 prismatic cells?** A: They honestly shouldn't specify 18650, as that is simply a form factor most notably used for Li-Ion, however it's possible that an 18650 cell could have LifePo4 chemistry. With that said, this model bms is a LiFePo4 BMS used for 3.2V Nominal, 3.7V charging profile LiFePo4 battery cells, most commonly found in larger form factors such as Prismatic, 32650, 32700, etc form factors. However even within those form factors, they are not exclusively used for LiFePo4, so it's most important to look at the nominal and charging profiles of your lithium batteries chemistry and match that to your bms. **Q: Will this work with LifePo4 32650 6000ma 12.4v?** A: Ending voltage should be 14.4 when fully charged, or 4 lifepo4 cells in series **Q: Will this BMS work for solar applications to charge a 280ah battery pack at 12v?** A: lifepo4 4s bms can be working for lifepo4 4s battery pack . both battery type and strings should be matched. as for the current , please specify the battery load W and the limited current then we can do a calculation. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Defective Product Recieved - Daly 100A 4S Smart BMS *by F***D on May 27, 2023* Cell 1 shows about 100mv lower on the app than the measured voltage and bounces around +/- 10mv like a loose internal connection. Everything else in the app works and tested fine but this defect will affect both balancing and low cell cutout protection. I tested the bms on receiving it, but did not notice this defect until the pack was finished, which is too late to return. There is no way to repair these molded bms units. Will do more thorough testing on whatever I use to replace this. UPDATE: 06-08-23 So I ended up buying this again since all the wiring was finished and it was the easy way to move forward. Connected the new BMS to the existing wiring, set the parameters up, and tested it. Everything worked as advertised. A few days ago, Daly reached out to me asking if I had a problem after seeing the review. After I described the problem, they asked for a resistance measurement and then for a picture of the measurement. Three days later, Amazon has refunded the purchase. Given the time difference between here and China, I was impressed at how fast they resolved the problem. Customer service from Daly is far better than I expected. If you live in a cold climate and are using one of these for an outdoor application, be sure to change the cold temperature protection parameter. Charging an LFP battery below freezing will destroy the battery. Overall, this smart BMS has a lot of features for the price, and I would recommend them. ### ⭐⭐⭐⭐⭐ A must with lithium. *by I***N on May 20, 2025* I've owned multiple daily products and when it comes to regulating big cells of lithium it's recommended utilizing bluetooth. The build quality is solid and it is simple to install once you bolt it down. The Bluetooth has decent range but doesn't like too much interference which will require you to be closer. Functionality is simple and straightforward as long as you possess basic understanding of how to set up lithium battery parameters. Note; recommend setting up your lithium and limiting communications to avoid any form of hacking to the actual battery. Back door to the software could cause overcharging undercharging and that is a concern. Other than that this is a great product that has personally allowed me to create several 1000 amp batteries. ### ⭐ I've purchased two of these 200A 4s 12v BMS - both have failed under very light use. *by M***M on June 3, 2024* I've purchased two of these 200A 4s 12v BMS - both have failed under very light use. I built a 4s battery (304ah EVE cells) for our travel trailer and used a DALY 4s 12v BMS with bluetooth. The first one lasted about 1 year until the charge MOS failed; I'd estimate maybe 3 charge cycles. The charge MOS said it was ON, and I could switch the state ON/OFF but, the BMS would not accept a charge. The second one, at first use, randomly shuts OFF the Discharge MOS. Max discharge rates I see on our trailer are around 12A peaks; typical rates are 2-8 amps. I set the max discharge cut off to 50A, and it tripped within the first few hours of use. That seemed odd, my older unit never tripped the discharge MOS but.. I I decided to try to increase the max discharge to 150A and rebooted the BMS; no change, it still randomly tripped the discharge MOS a few more times during the next 2 days. So far, I am two for two with bad DALY BMS units. I checked with the community at DIY Solar forums and it seems the general consensus is that DALY is not a very reliable BMS, and they are not know for good support. I sent them an inquiry and they replied with a generic message which seemed like marketing. ## Frequently Bought Together - DALY Smart BMS 4S 12V 100A LiFePO4 PCB Protection Board with Balance Leads, Wires 3.2V Battery Protection Module BMS for 18650 Battery Pack 12V with UART(Smart BMS,100A) - Daly 5A Active Equalizer 16S Active Balancer for Lifepo4 Li-ion LTO Battery Groups Capacitor Balancer - TKDMR 10pcs 1/0 AWG-3/8 Battery Lugs,Heavy Duty Wire Lugs,Ring Terminals,Battery Cable Ends,0 Guage terminals,Battery Terminal Connectors with 10pcs 3:1 Heat Shrink Tubing --- ## 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.pt/products/275738210-lifepo4-bms-4s-12v](https://www.desertcart.pt/products/275738210-lifepo4-bms-4s-12v) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-05-15*