Do you need a low-temperature cutoff? Having that kind of protection might be necessary if you live in a climate where it gets cold. GW-24S4EB (NEEY/Heltec 4A Smart Active Balancer), hw HW-2.8.0, sw ZH-1.2.3 (reported by @cristi2005) I have 4 of them and I bought them from the Alibaba Heltec store here - https://www.alibaba.com/product-detail/14-24S-200A-Smart-BMS-with_62544207027.html

sensor:127]: 'jk-bms temperature sensor temperature protection': Sending state 100.00000 °C with 0 decimals of accuracy A few things that do NEED Clarification for your own sanity and because there are LEADisms and Wives Tales associated with them due to misunderstandings. sensor:127]: 'jk-bms discharging low temperature protection': Sending state -20.00000 °C with 0 decimals of accuracy Setting up this BMS and getting it going was a much more simple process compared to a lot of other smart BMS. This is, in part, because the JK BMS has an app that is actually in the app store, so you don't have to go through any kind of crazy steps to get it. Having an official app makes it really easy to ensure that you have the most updated version, which generally makes everything work better. ANT/JBD BMS The app that both JBD and ANT use is a little clunky and does not scale well on mobile devices of varying ratios. Also, the Bluetooth fails to connect pretty regularly. As I said, though, this only seems to happen on ANT models, and they may have fixed those problems since then as they seem to be newer versions of the ANT models which I haven't tried yet.Bluetooth communication function, equipped with APP, to view the state of the battery in real time; At present, the company's main products are Smart BMS with active balancer,Active balancer, lithium battery Voltage difference repair instrument. All three of the above-mentioned BMS companies are great and offer many different models, but we will compare three BMS of similar power levels from each company. JK BMS: Chengdu Jikong Technology Co., Ltd. is a high-tech enterprise focusing on the research and development, production and sales of lithium battery management system. Relying on high-power active balancing technology with independent intellectual property rights, the company is committed to becoming a leader in active balancing management systems for lithium batteries. Some people say that DALY BMS do not do balancing, but this is incorrect. DALY BMS does not do active balancing without the addition of an active balancer module. This enables DALY to provide more compact, lower-cost BMS than its competitors. If you don’t get the active balancing module, the built-in passive balance current is 100ma.

A smart BMS connects to an app through Bluetooth, wifi, RS485, or a CAN connection. You can change the settings in the graphical interface. A standard or ‘dumb’ BMS is plug-and-play. The settings cannot be changed. What is the difference between a switch BMS and a relay BMS?Real-time, active, energy transfer equalization, after the balance is reached, the pressure difference between the cells is ≤ 3mV; The "Working Voltage Range" is 3.000-3.400 Volts per cell, yes, that's right, ALL the deliverable AH is from that tiny 0.400V Range (280AH from a 280AH Cell.) for Grade A Nominal Voltage is always indicated as 3.200 Volts which IS 50% SOC.

Passive balancing will remove or add capacity from a particular cell and dissipate it as heat. Active balancing takes the excess from one cell and delivers it to a cell with a lower voltage. Active balancing has fewer losses -and is thus more efficient. read more about passive and active balancing here. What size BMS should I use? sensor:127]: 'jk-bms temperature sensor temperature recovery': Sending state 100.00000 °C with 0 decimals of accuracya) Before touching the PCB, the person performing the operation must discharge static electricity and take anti-static measures; Our proprietary technology is used by the BMS for active balancing. Maximum battery consistency, longer battery life, and delayed battery aging are all possible thanks to our high current active balancing technology. JK BMS" APP is a mobile phone management software for active balance series products launched by Chengdu Jikong Technology Co., Ltd. Through the APP, you can easily view and modify the performance parameters of the lithium battery. The QUCC is a BMS that uses a relay instead of MOSFETs to break the circuit. This results in the cost being lower, but that doesn’t make it more reliable. By Charging to 3.425Vpc 54.8V (48V System) you are just over the top edge and allowing for the cells to settle (LFP Always settles a bit), this also prevents any Cell from becoming a Runner and going high. You can safely discharge to 2.900Vpc 46.4V again without issues and never ever see a "Runner Cell" which can go low fast. MAKE SURE Your Inverter has a Low Voltage Cutoff @ 2.650Vpc / 42.4V

I don't think jblance's program does any programming. I can't remember, but doesn't the default app have provisions to set a voltage? I thought there's a low voltage setting where it will stop balancing once it reaches a low voltage limit. So you can set it to 4.0V so it will never balance until it gets over that value. Oh I just noticed that you have the BMS version, which may have a different interface? sensor:127]: 'jk-bms charging high temperature protection': Sending state 70.00000 °C with 0 decimals of accuracyEqualizer power supply, can be connected to the postive for any section of 13~24S ;can also be connected to a 40-100V DC External power supply. All JK-BMS models with software version >=6.0 are using the implemented protocol and should be supported.