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A finished 38.4V 100Ah LiFePO4 battery (36V class / 12S) with per-cell Bluetooth monitoring and automatic low-temperature heating for charging — the 24V model most of the market does not offer: their 24V batteries stop at a low-temperature cut-off, this one warms up and charges.
Request a quotation for this battery: Start a BTH-36V100 inquiry · WhatsApp: +86 159 8945 0735
The Cold Problem This Battery Solves
LiFePO4 cells must not be charged below 0 °C — charging a frozen cell damages it permanently. In 12V products, heated models are everywhere; in 24V, almost every battery on the market handles cold the blunt way: the BMS simply blocks charging until the weather warms up. On a 24V trolling-motor boat, a 24V solar system, or a truck or bus auxiliary bank, that means the battery is protected and useless at the same time, all winter.
This battery takes the other route. Heating film is built into the pack, driven by the BMS. When a charger is connected and the cells are below the heating threshold, the BMS powers the heaters from the charger first, warms the cells into the safe charging window, and only then lets charging current flow — automatically, with the low-temperature charge cut-off still standing guard behind it. You see the whole sequence in the app: cell temperatures rising, heating on, then charging under way.
The second half of the design is visibility. The smart BMS (Jiabaida/JBD platform — the same board family we supply as standalone smart BMS boards) carries Bluetooth monitoring as standard: all eight individual cell voltages, pack voltage and current, state of charge, both temperature sensors, cycle count and protection events, readable on a phone at the battery — no shunt, no display panel, no guessing which of the eight cells is drifting.
Reference Standard Configuration — 38.4V 100Ah (36V class)
| Item | Reference configuration | Basis |
|---|---|---|
| Nominal voltage / capacity | 38.4V / 100Ah — 3,840Wh; 12S prismatic LiFePO4 | Fixed by the model |
| Smart BMS | JBD-platform smart BMS, 100A continuous class | Board model confirmed per order |
| Bluetooth monitoring | App readout: per-cell voltage (8 cells), pack voltage/current, SOC, temperatures, cycles, protection log | Standard fit on this series |
| Heating | Integrated heating film; auto-starts on charge below the set threshold (typ. 0 °C), powered by the charger; heating and charging status visible in the app | Standard fit on this series; thresholds set per order / in app |
| Low-temperature protection | Charge cut-off below the safe cell temperature remains active independent of heating | Standard BMS protection |
| Standard protections | Over-charge, over-discharge, over-current, short-circuit, over/under-temperature, cell balancing | Standard BMS protection set |
| Case | Sealed ABS battery case (steel case as an option) | Dimensions confirmed per order against the case in your configuration |
| Terminals | Standard top terminals, P+ / P− | Terminal form confirmed per order |
Read the Basis column the way our buyers do: the Bluetooth and heating functions define this series and are standard on every model in it; dimensions, terminal forms and board current class are confirmed in the order specification, because case moulds and board options in this class genuinely vary by programme. Final specifications are those in your order confirmation — not this page.
The Series — Configuration Options
| Model | Nominal | Energy | BMS class | Inquiry code |
|---|---|---|---|---|
| 12.8V 50Ah with Bluetooth & Heating | 12.8V 50Ah | 640Wh | 50A (100A option) | BTH-12V50 |
| 12.8V 100Ah with Bluetooth & Heating | 12.8V 100Ah | 1,280Wh | 100A (150A option) | BTH-12V100 |
| 12.8V 200Ah with Bluetooth & Heating | 12.8V 200Ah | 2,560Wh | 200A class | BTH-12V200 |
| 12.8V 314Ah with Bluetooth & Heating | 12.8V 314Ah | 4,019Wh | 200A class | BTH-12V314 |
| 12.8V 460Ah with Bluetooth & Heating | 12.8V 460Ah | 5,888Wh | 200A class | BTH-12V460 |
| 25.6V 100Ah with Bluetooth & Heating | 25.6V 100Ah | 2,560Wh | 100A class | BTH-24V100 |
| 25.6V 125Ah with Bluetooth & Heating | 25.6V 125Ah | 3,200Wh | 100A class | BTH-24V125 |
| 38.4V 100Ah with Bluetooth & Heating (this page) | 38.4V 100Ah | 3,840Wh | 100A class | BTH-36V100 |
| 51.2V 100Ah with Bluetooth & Heating | 51.2V 100Ah | 5,120Wh | 100A class | BTH-48V100 |
Every model in the table is the same product idea at a different voltage: Grade A prismatic cells, the JBD-platform smart BMS with Bluetooth, integrated heating, and the full protection set. A native 25.6V pack also replaces the common workaround — two 12V batteries in series, whose two BMS units can never balance against each other and whose heating, if fitted at all, runs as two separate systems. One 8S pack has one BMS, one heater control, one app view. Case format (sealed ABS or steel), terminal form, and OEM appearance (case colour, your logo and labels, rating plate, manual, packaging) are configuration options on all nine models.
What the Bluetooth Link Actually Tells You
- Per-cell voltages, all eight — the earliest warning of imbalance; you see the drifting cell months before it becomes a capacity complaint
- Live charge and discharge current, pack voltage, SOC — what a shunt monitor would tell you, without fitting one
- Both temperature sensors and heating state — whether the pack is heating, at what temperature charging started, and what the coldest cell reads
- Cycle count and protection events — the battery’s own service history, which is what warranty conversations and fleet maintenance actually run on
- Protection parameters — thresholds readable in the app; adjustable items are set per your order specification
For installers and distributors, this is the support feature as much as a user feature: a customer reporting “the battery stopped charging” can read you the protection log and cell temperatures from their phone, and a cold morning with heating under way looks exactly like what it is — not like a fault.
How the Heating Cycle Runs
- Charger connects, cells are cold. The BMS reads the temperature sensors below the heating threshold and holds charging current off.
- Heating starts, powered by the charger. The heating film warms the cell block evenly; the app shows temperatures climbing. No energy is taken from the pack itself in the standard configuration.
- Charging begins inside the safe window. Once cells reach the set temperature, the BMS opens charging and the heaters cycle off; the low-temperature cut-off stays armed the whole time, so a heater fault never becomes a frozen charge.
Heating energy comes out of the charger’s output, not your stored capacity — on a solar morning the first minutes of weak winter sun go to warming, and the day’s charge follows. If your application needs the pack warmed with no charger present, tell us the duty cycle in the inquiry; that is a project configuration, quoted as such, not a silent assumption.
Where This Battery Earns Its Keep
- 36V-class light EV and utility platforms — where a finished 12S LiFePO4 pack is specified instead of three 12V lead-acid blocks; tray fit and BMS current class are confirmed against your platform drawings
- Cold-region outdoor equipment — equipment that must accept charge below freezing; heating still runs from the charger, so tell us the charger model
- Private-label 36V programmes — distributors who need Bluetooth visibility and cold-charge behaviour under their own brand; start from our OEM & ODM page
- Related ranges — for golf-cart platforms see our golf cart battery page; for standard (non-heated) 36V options see 36V 50Ah LiFePO4 and related series pages
If your climate never goes below freezing, a standard 36V-class pack without heating hardware is the better buy — ask in the inquiry and we point you to the matching non-heated configuration. If you assemble packs yourself, the same Bluetooth-and-heating board platform is available as a standalone smart BMS board.
OEM / ODM: Your Brand, Your Specification
This series is supplied for distributors, outfitters and private-label programmes: case colour, logo and rating labels, manuals and packaging carry your brand; configuration covers BMS current class, case format and terminal form across the nine models. Our role is coordination — requirements are confirmed in a written specification, matched against manufacturing partners’ production, with the agreed checkpoints and export documents handled on our side. The specification in your order document is what binds the shipment. Start from our OEM & ODM coordination page or the OEM / ODM RFQ checklist.
What to Send Us for a Quotation
- Model — 38.4V 100Ah (36V class), or another model from the series table
- Your coldest charging condition — the lowest temperature at which the battery must accept charge; this confirms the heating configuration
- Largest continuous load (trolling motor thrust / inverter size) — so the BMS current class is sized to the real discharge profile
- Charger you will pair it with — heating runs from the charger, so its output matters
- Quantity and destination — samples for evaluation, or your expected regular volume, plus the destination port
Frequently Asked Questions
Why do so few 24V batteries have real heating?
Most 24V models in this class were specified for milder duty, so makers fitted a low-temperature cut-off — protection without usability — and stopped there. This model carries the same heater-and-BMS architecture as our 12V heated batteries, scaled to 8S. If you are comparing offers, ask the direct question: does it heat, or does it only cut off? The answers are different products.
Does the heating also warm the battery for discharging?
It does not need to: LiFePO4 discharges safely well below 0 °C (with reduced capacity); it is charging that cold forbids. The heating system exists to bring cells into the safe charging window when a charger is connected. If your duty cycle needs warming with no charger present, raise it in the inquiry — that is a project configuration.
What happens if the heater fails on a frozen morning?
The same thing that happens with a standard battery: the BMS low-temperature cut-off keeps charging blocked and the cells stay safe. Heating is layered on top of the protection, never instead of it — a heater fault costs you a charge, never a cell.
Can this replace two 12V batteries in series?
That is one of its main jobs. A native 8S pack has one BMS balancing all eight cells and one heating system, where a series pair has two independent BMS units that cannot balance across the pair. Confirm your charger’s 24V lithium profile in the inquiry and we flag any mismatch before you order.
Will Bluetooth drain the battery in storage?
The BMS standby draw, Bluetooth included, is small against a 100Ah pack, but it is not zero. For storage measured in months, charge the battery to its storage level and follow the storage instructions in the quotation documents; for a winterised boat, check the app state once in a while — which is rather the point of having it.
The Bluetooth & Heating Series
This page covers the 38.4V 100Ah (36V class / 12S) model in LJY Energy’s Bluetooth & heating LiFePO4 series — finished batteries whose smart BMS combines per-cell Bluetooth monitoring with automatic low-temperature heating for charging: 12.8V 50Ah, 12.8V 100Ah, 12.8V 200Ah, 12.8V 314Ah, 12.8V 460Ah, 25.6V 100Ah, 25.6V 125Ah, 38.4V (36V class) 100Ah and 51.2V 100Ah, all confirmed per order specification. The full product range is on Products.
Request a quotation for this battery: Start a BTH-36V100 inquiry · WhatsApp: +86 159 8945 0735
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