4S BMS LiFePO4 60A Balance, Waterproof (12V)

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Seller: gridvision (400) 100%, Location: Saint Petersburg, Florida, Ships to: Worldwide, Item: 293179024373 4S (12V) 60Amp BMS with Balance LiFePO4 (Charges to 14.4V)Known in the industry as LFP-4S-60A (chemistry, series connections, amps) *** This BMS is for LiFePO4 chemistry, on a 4S pack, with a 60A continuous discharge rating. *** Choose single port or dual portSingle Port: Either charge or discharge, but not both at the same time. Dual Port: Charge and discharge at same time through different connectors. Tested by Us before Shipping to YouWaterproofBalance FunctionMultiple Protection Functions 60Amp ContinuousIncludes Male/Female XT-60 Connector How to choose proper BMS:Start with the chemistry of your cells. The chemistry determines the operating voltage range. Cells go by a "nominal" voltage name, but they all operate across a range of voltages. LiFePO4 (LFP or Lithium Iron Phosphate) charges to between 3.6-3.7V/cell depending on the manufacturer. Most all the other cells in the public domain are a form of Lithium-ion chemistry (Li-ion, Li-po, or INR), and charge to 4.2V/cell. Lithium Titanate Oxide (LTO) charges to about 2.85V/cell. So know which chemistry you are dealing with. How many series connections are you going to make in your battery pack? Placing cells in series multiplies up the voltage of the pack. You'll need to know how many volts your load needs before you decide how many cells you need in series. While deciding, it is a good idea to write down the RANGE of input voltages your load can handle. This can make the difference in you choice of how many cells in series. Once you settle on a number of series connections for your pack, you can limit your BMS search to only the ones matching your Series connection parameter. How many AMPS will you be drawing? You can build a gigantic battery, but what matters is how many amps will your load be drawing? Pick a BMS that can handle the load you intend to draw from your cells. Some circuits only pull a few amps. Small motors can pull 20-30 amps. Skateboard and scooter motors tend to max out around 30-40A. A hair dryer can pull 100A from a 12V DC circuit! And remember: watts / volts = amps. If your motor is a 24V 1000W motor, its nominal amp rating is 1000W / 24V ≈ 42Amps. So think about the load you need to design your pack for, and only then should you pick your BMS. Single Port or Dual Port? Many BMS units are single-port meaning you can either charge or discharge through the connector, but you can't do both at the same time. With single port, the charge and discharge current limits are equal. A dual-port BMS allows for charging and discharging at the same time through two different connectors, but charge current is LIMITED to 8 Amps. There are times when you need to use single port, and there are other times when a dual port works best. Think about how you plan on using your battery. Mobile applications are usually best with single since you aren't likely to be charging while you are riding. If this will be stationary and hooked to solar panels, dual port might be more suitable. Think about it before you make a decision, and remember the current limit on dual port charging. Functions:Over charge protectionOver discharge protectionShort circuit protectionOver current protectionBalance individual cells in pack Installation Tips:Ground yourself and wear rubber gloves when working with electronics to protect your equipment from static electricity. We recommend testing the voltage of your pack at each series connection before wiring up the BMS. Check for loose welds and bad solder connections throughout the pack. IMPORTANT Connect the BMS in this order: (we include a printed copy of these instructions in your shipment) Pack Ultimate NEGATIVE: Connect the BLUE B- wire of the BMS to your pack's ultimate negative end. This is the negative end of the first cell (or parallel group) in your battery pack.Wiring Harness: The wiring harness only connects to the BMS in one direction. Do not attach it until you've wired up all the harness wires first. Note that the Black wire of the harness attaches to the BMS at the "-" mark. If your BMS unit isn't marked + and -, the black balance wire connects to the bottom post as you are looking at the face of the BMS and reading the info on the face. See the last photo above. Go ahead and attach the thin black harness wire to the same negative end of your pack as in step 1 above.The next harness wire is red. It is adjacent to the black wire. Connect it to the POSITIVE end of the first cell (or parallel group) in your pack. This is the positive end of the same cell you connected the negative wires to in steps 1 and 2 above. Continue connecting each remaining red harness wire to the POSITIVE terminal of each cell (or parallel group) in your pack.When all harness wires are connected to the pack, go ahead and plug the harness into the BMS.BMS NEGATIVE: Connect the BLACK P- wire from the BMS to the negative port of the Male XT-60 connector (triangle side) or whatever discharge connector you intend to use. Extra step if you have dual port unit: connect the YELLOW wire to your charge connector's NEGATIVE terminal. Pack Ultimate POSITIVE: Connect a proper gauge wire from the battery ultimate positive terminal to the positive port of your Male XT-60 connector (square side) or whatever discharge connector you intend to use. This is the MAIN POSITIVE WIRE of the entire setup. It does not connect to the BMS. It connects directly from the pack POSITIVE to the XT-60 Positive lug. Extra Step if you have a dual port unit: Connect a proper gauge wire from the battery ultimate positive terminal to your charge connector positive terminal. Mounting the BMS unit: The BMS may be mounted directly to your pack, but when running the BMS up toward its max amp rating, it can get a bit hot, and heat is bad for your cells. So when maxing out a BMS, think about either mounting the BMS away from your pack or engineer an insulation solution into your design, and secure all wires so that they can not be pulled loose or get snagged on anything. Usage:Single Port: Charge and discharge from the single connector as needed. Dual Port: Charge and discharge at the same time through the two different ports. Limit charge current to 8 Amps. Be careful with batteries. They can short and cause fires if not properly handled. Treat your craft with dignity and caution. Building batteries requires common sense and a respect for the dangers involved. Implement care when executing and deploying your skills. Datasheet Summary LFP-4S-60A Rating Charge Voltage14.4V (3.6V ± 0.05V/cell) Max Continuous Discharge Current 60 Amps Peak Discharge Current 180 Amps Charging Current Single Port: up to 60 Amps but check cells recommended C-rate. Dual Port: 8A LIMIT Operating Temp Range*-30°C to +75°CCell Balance Voltage 3.6V ± 0.05V /cell Over Current Detection Delay Time500msBalance Currentapprox 35mA Over Discharge Cutoff 2.5V ± 0.05V/cell Size80 * 65 * 12 mm * Charge all lithium-chemistry cells at >0°C (32°F). Anything less will destroy the cells. ShippingWe ship First Class with delivery typically in 2-4 days.Any weekday order prior to 3PM Eastern is shipped same day.Orders received after 3PM Friday may not ship until Monday morning. Returns:We go out of our way to test each unit before it leaves us. We KNOW the unit works. Electronics are sensitive, and if you connect the unit in the wrong order, you can burn it out. We will not refund a burned-out unit. We know it was not burned out when it left our hands. You Must connect it like we show you in the instructions. Also, if you return the unit and it has connectors soldered onto it, we can not resell it. It might as well be toast. We will not refund it. If you don't return the balance harness with the unit, but otherwise the unit is in good working condition, we will deduct $5. The unit then goes into our "Grab Box" of discounted items that only a few engineers like to pick through. We can never sell it as new again. So understand that returns hurt us, and that is why we test everything before it goes out. Do yourself a favor: Use alligator clips to temporarily connect up your entire rig to make sure everything works. Do this before you modify the BMS unit by soldering connectors to it. Contact us: If you have ANY problems, we are more than willing to help troubleshoot your build. We've helped thousands of explorers find the bugs in packs, welds, wiring issues, etc, and we will HELP you. That is part of what you get when you do business with us: our willingness to help you. Just don't try to stick it to us by destroying our unit, and then expecting us to reimburse you for what has become a piece of scrap metal. Just contact us before you start zapping it with current if you have any concerns at all. Grid Vision, LLCGeneration->Storage{Applications:Deployments} Contact us if you are having problems.We support engineering and hobby types alike, and we are here to help.Wear gloves, stay grounded, stay focused, stay safe.Thank you for your business. Condition: New, MPN: LFP-4S-60A, Brand: GridVision

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