52V 21Ah Lithium-Ion Battery Pack 50A BMS, 14S6P
LG MJ1 18650 Cells · 50A Continuous BMS · 1,092Wh
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Product Description
Power your e-bike build with this premium 52V 21Ah lithium-ion battery pack, built with genuine LG MJ1 18650 cells in a 14S6P configuration. Delivering roughly 1,092Wh of capacity, this pack is engineered for reliable range and strong sustained power on both hub motor and mid-drive e-bike conversion builds.
A high-quality 50A continuous BMS with separate charge and discharge ports keeps everything safe — over-charge, over-discharge, over-current, and short-circuit protection are all built in. The pack is wired with heavy-duty 10AWG output leads for minimal voltage drop under load.
Plug Type: XT-90 Female
Full Specifications
| Model | LPY-P101 |
| Nominal Voltage | 52V (14S Li-ion configuration) |
| Nominal Capacity | 21Ah (min 20.4Ah) |
| Watt Hours | ≈ 1,092Wh |
| Cell Type | LG MJ1 18650 — 3.6V 3500mAh (Li-NiCoMn) |
| Configuration | 14S × 6P |
| Standard Charge | 58.8V CC/CV (5A max) |
| End-of-Charge Current | 0.02C |
| Charge Time | ≈ 7.5 hours (with 3A charger) |
| Max Continuous Discharge Current | 50A |
| Over-Current Protection | ≈ 150A (± 23A) |
| Cycle Life | ≥ 800 cycles (@ ≥ 80% capacity) |
| BMS Protection | Over-Charge, Over-Discharge, Over-Current, Short Circuit |
| BMS Type | 14S 50A, separate charge / discharge ports |
| Over-Charge Protection (Cell) | 4.25V ± 25mV |
| Over-Charge Protection (Pack) | 59.5V |
| Over-Discharge Protection (Cell) | 2.7V ± 80mV |
| Over-Discharge Protection (Pack) | 37.8V |
| Short Circuit Protection | Yes, auto-resumable |
| Output Wiring | 10AWG leads |
| Dimensions | 365 × 85 × 240 mm (14.4 × 3.3 × 9.4 in) |
| Weight | ≈ 6.0 kg (13.2 lbs) |
| Operating Temperature | Charge: 0–45°C / Discharge: −10–60°C |
| Storage Temperature | 1 month: −20–45°C / 3 months: −20–45°C / 1 year: −20–20°C |
Safety & Handling
- Use only Li-ion 58.8V CC/CV chargers (supplied)
- Do not short, reverse polarity, or charge below 0°C
- Store cool and dry at ≈ 50% state of charge if unused for more than 3 months
- Avoid water immersion and direct heat sources
Battery Care & Charging
Store the battery in a clean, dry, ventilated, dark environment. When not in use, keep it at half charge and recharge every 3 to 6 months.
During charging, the charger's indicator light shows red; once fully charged, it turns green.
To prolong battery life, recharge before it's completely dead, and after every 30 charges, allow a full discharge before recharging.
Warranty
- 12-month warranty
- Product quality guaranteed by PAIC insurance
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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