The LB12 is a rechargeable lithium-ion battery pack built on NCM chemistry, sized for lighting products that run on a single-cell architecture. Two LR1865HC cells sit side by side in a 1S2P arrangement inside a PVC-wrapped body of roughly 37.3 × 18.8 × 69.3 mm. The result is 3.6 V nominal, 7 Ah at C5 and about 25.2 Wh of energy at 100 ± 10 g — enough capacity for a work light or an emergency luminaire to run from a pack that still fits a handle or a lamp head.
The products this pack suits are handheld and installed lights: portable work lights, industrial flashlights, emergency and exit luminaires, inspection lamps and head torches. Each one asks the same two things of the battery — carry enough energy for a shift or a backup period, and survive the way the product is charged, stored and carried. Putting two cells in parallel means they share the discharge current, which keeps AC internal resistance at or below 60 mΩ and lets the pack take a 2 A charge without growing beyond a slim block.
Treat this as a 3.6V battery pack for industrial flashlights and similar OEM lighting products rather than a standalone aftermarket replacement cell. It is supplied as a reviewed configuration: you confirm the driver window, load profile, charger and compartment drawing, and we confirm the exact revision that fits them. A product already running a 3.6 V single-cell pack with a comparable connector and protection scheme is the natural starting point; a light with a different voltage window, charge profile or mechanical envelope needs its own review before anything is approved.
In service the pack is charged through the product's own charging circuit, discharged into the LED driver, and often left unused for weeks between jobs. That pattern — shallow use, long storage, repeated charging inside a sealed housing — is what the capacity, retention and cycling criteria in the reference manual are written around.
| Parameter | Specification |
|---|---|
| Nominal voltage | 3.6V |
| Rated capacity | 7Ah (C5) |
| Minimum capacity | 6.7Ah (C5) |
| Rated energy | Approx. 25.2Wh |
| AC internal resistance | ≤60mΩ |
| Charging voltage | 4.18-4.20V |
| Maximum charging current | 2A |
| Charge cut-off current | 70-140mA |
| Maximum discharge current | ≤4A |
| End-of-discharge voltage | Approx. 2.8V |
| Charging temperature | 0°C to 45°C |
| Discharging temperature | -20°C to 60°C |
| Item | Detail |
|---|---|
| Product model | LB12 |
| Reference model | JG-1INR3.6-7-Y |
| Document number | L1.0062-N1-0102-10-003 |
| Version / date | 00 / 18 August 2025 |
| Capacity basis | C5 |
| Test environment | 25 ± 2 °C, relative humidity ≤85%, 86–106 kPa |
| Cycle life | ≥500 cycles, with ≥70% capacity retention |
| Cycle procedure | Standard charge and discharge with a 0.5–1 hour rest between steps |
| Charge retention | ≥85% after 28 days |
Every pack is built to a specification revision, so the first thing to confirm is which revision and configuration your order will follow; the cycle and retention criteria in the manual describe test conditions, not a service-life warranty for your product. Quantities, production scheduling and any engineering charge for a changed configuration are quoted per project — ask your sales contact for the current figures rather than assuming a standard term. PVC-wrapped packs normally travel individually protected with the terminals insulated, so confirm the packing specification and carton marking your warehouse needs. Lithium cells and packs are regulated for transport, and the documents available depend on the exact configuration and destination market, so request them for the pack you are buying instead of relying on paperwork issued for another model. Ask your sales contact about sample availability and the lead time that applies when you place the order. When you order a 3.6V 7Ah NCM battery for a lighting programme, keep the approved drawing and the incoming inspection points with the purchase order so delivered packs can be checked against them.
Technical questions reach the people who build the packs. Our engineering group in Shenzhen reviews your device's voltage window, load profile, enclosure space and charger before proposing a configuration; our sample group then builds units so you can validate fit and runtime before production. Cell selection, BMS design and pack assembly stay in-house, with quality checks in process and at final inspection, and a documentation team handling certificates, test reports and shipping papers. When a unit behaves unexpectedly in the field, our engineers help trace the fault and advise on installation and commissioning.
Test the pack with the actual driver and the light's real modes rather than estimating from the energy figure. Record the load, the driver cut-off, the temperature inside the housing and the elapsed time for each mode, and repeat at least one run at the ambient temperature the product meets in service. Rated energy is measured at C5 under the manual's conditions; how long the light runs depends on driver efficiency, dim level, cut-off setting and how cold the housing gets.
No. The ≤4 A entry is a limit, not a promise of continuous 4 A operation. Ask for the permitted duration, the thermal conditions and the protection thresholds that apply to the exact revision you are buying, then compare them with your light's steady current and its startup or boost peak. Send both figures — normal current and peak with its duration — so the configuration can be checked against them.
Use a dedicated lithium-ion charger set to this pack's charging voltage and termination current, with a current limit that stays at or below the pack's maximum charging current. Send us the charger model and its charge profile and we will check it against the pack revision. Selecting a charger from the 3.6 V nominal figure alone is not enough, because termination behaviour and protection thresholds differ between chargers.
Sometimes, but the decision is mechanical and electrical rather than nominal. Compare the compartment against the 37.3 × 18.8 × 69.3 mm body, then check the connector, pinout, lead exit, driver input window and cut-off with this 3.6V battery pack for industrial flashlights. Two packs of the same voltage can behave very differently if their protection thresholds or charge termination differ. Send photos of the old pack, its label and the compartment, and we will tell you what has to change.
No. Finished packs must not be joined in series or parallel, and the reference manual for the 3.6V 7Ah NCM battery rules it out. For more energy or a different voltage, ask for a separately reviewed configuration built as one pack, so the cells are matched and the protection circuit covers the whole string.
Changes to the lead exit, mating connector, wire length or wrap can be reviewed as a custom lighting battery configuration; feasibility depends on the space inside your housing and on the quantities you plan to build. Send the mating connector part number, the pinout, the lead length you need and a drawing of the bay, and we will come back with what can be changed and what should stay as it is.
