3S 12V BMS 18650 Lithium Battery Protection Board for Cordless Hand-drill Machine
The ITL0030200049-01 is a mid-power-focused protection board engineered exclusively for 3-cell series (3S) lithium battery packs—supporting Li-ion, Li-polymer, and LiFePO4 chemistries—with a maximum discharge current of 15A. Tailored for medium-power, mid-voltage applications (nominal 11.1V for Li-ion), it balances robust current handling with precise safety controls, making it ideal for small electric tools, portable energy devices, and recreational gear that demand consistent 3S power delivery.
3S-Specific Protection & 15A High-Current Safeguards
Calibrated to address the unique dynamics of 3-cell configurations, the board delivers targeted protection optimized for 3S voltage ranges and 15A discharge demands:
Overcharge Protection: Triggers at 4.25V (Li-ion) per cell (total 12.75V for 3S packs), instantly cutting charging current to prevent cell swelling, electrolyte breakdown, or thermal runaway—critical for 3S systems where voltage imbalance across three cells can accelerate performance degradation.
Undervoltage Protection: Shuts down discharge at 2.5V (Li-ion) per cell (total 7.5V for 3S packs), avoiding irreversible capacity loss from "weak cells" that often disrupt mid-power operation (e.g., tool startup or drone flight).
15A Overcurrent & Short-Circuit Protection: Blocks currents exceeding 15A (max discharge) or 45A (peak surge), shielding the 3S pack and connected devices (e.g., cordless screwdrivers, small drones) from burnout during high-load use or accidental short circuits.
3-Cell Active Balancing: Automatically equalizes voltage across all three cells during charging, eliminating uneven charge distribution—a common point in 3S packs. This extends battery lifespan by up to 30% compared to unbalanced systems and maintains steady 15A discharge performance.
Ideal Application Scenarios
This board is tailored for 3S lithium devices requiring 15A peak discharge:
Small Electric Tools: 3S cordless drills, mini grinders, or handheld vacuums (11.1V Li-ion);
Recreational Gear: 3S small drones (main batteries), RC cars, or electric skateboards (entry-level models);
Portable Energy: 3S compact power stations (for charging laptops or tools) or high-brightness LED work lights;
Everyday Electronics: 3S portable speakers (high-volume use) or handheld game consoles (power-intensive gameplay).
About Us
Shenzhen BAKTH Technology Co., Ltd. was established in 2002. For 21 years, we've specialized in battery pack assembly and PCM/BMS design and production. Our 5,000-square-meter factory features automated production lines and SMT assembly capabilities.
Certifications
FAQ
What kind of certificate your battery pack owned?
ISO9001, ISO14001, UL, BIS, KC, USTC, CE, CB - our battery packs have reliable quality assurance.
Do you have MOQ?
No limitation - we offer competitive pricing based on order quantity. Sample orders are welcome to test our quality before bulk orders.
What's the warranty? How can we guarantee quality?
Standard warranty is 12 months (negotiable for special products). Our complete production process ensures quality before shipment.
What's the lead time?
Standard products: 3-4 weeks for samples (depending on cell availability), 5-8 weeks for bulk orders (varies by model and quantity).
Can we have our own Logo on the battery pack? Can you accept customized battery?
Yes - our professional R&D team can provide customized solutions according to your requirements.
