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JAG35

48V Pre‑Built AmpBox (Redesigned, 29.1 kWh, 280Ah RTC) Black

48V Pre‑Built AmpBox (Redesigned, 29.1 kWh, 280Ah RTC) Black

$2,499.00 USD
$5,200.00 USD $2,499.00 USD
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Shipping calculated at checkout.
Capacity Options

29.1 kWh – Redesigned for speed, strength, and simplicity

Powered by 32 premium 280Ah RTC LiFePO4 cells, this redesigned AmpBox delivers massive capacity, improved internal layout, and faster build efficiency. Perfect for off‑grid homes, workshops, mobile power systems, and backup applications requiring long life and dependable output.

What’s Included

  • 📦 AmpBox Steel Enclosure (streamlined redesigned layout)
  • 🔋 32 × 280Ah RTC LiFePO4 Cells (16S2P configuration)
  • 🟥 48V PCB Busbar System (clean, efficient, low‑resistance)
  • ⚡ JK 200A Smart BMS (pre‑wired, LCD screen, CAN/RS485)
  • 🔒 Protective terminal covers
  • 🛠 Fully assembled, tested, and ready to use

You’ll Also Need

  • 🔌 48V‑compatible inverter
  • 🔗 Proper DC cabling and fusing
  • 🚚 Forklift or dock equipment for LTL freight (approx. 500 lbs.)

Key Features

  • ✔ 29.1 kWh Nominal Capacity (16S2P LiFePO4)
  • ✔ JK 200A Smart BMS with LCD display + CANBUS/RS485
  • ✔ Redesigned internal layout for faster assembly & improved reliability
  • ✔ Black faceplate for a clean, modern, professional look
  • ✔ Stackable design for multi‑unit expansion
  • ✔ Certified: CE, RoHS, UN38.3, MSDS, ISO
  • ✔ Ships to Lower 48 (instant LTL freight quote in cart)

🔌 Is AmpBox compatible with your inverter?
Start typing your inverter name to check compatibility with JK‑BMS and AmpBox.

Real-World Runtime Examples

Here’s how long a 29.1 kWh AmpBox can power typical household or commercial loads (based on ~28.7 kWh usable energy):

  • 🏠 Central Air Conditioner (3,500 W):
    ≈ 8.2 hours of continuous cooling
  • 🚗 Level 1 EV Charging (1,400 W):
    ≈ 20.5 hours — ~50 miles of driving range
  • 💡 Lights & Electronics (400 W load):
    ≈ 71.8 hours of backup power
  • 🧊 Refrigerator (150 W):
    ≈ 191.3 hours (~7.5 days)
  • 🔧 Power Tools (2,000 W load):
    ≈ 14.3 hours of work time
Actual runtime may vary depending on efficiency, load fluctuations, and environmental factors.

Runtime Calculator

Estimate how long this battery can power your load:


Based on 29.1 kWh nominal, 97% DoD, 97% inverter efficiency (~28.7 kWh usable).

AmpBox Specifications

  • Nominal Capacity: 29.1 kWh
  • Voltage: 48V nominal (52V full)
  • Configuration: 16S2P (32 × 280Ah RTC cells)
  • Communication: CANBUS / RS485
  • Cell Dimensions: 208 × 174 × 72 mm
  • BMS: JK 150A Smart BMS with LCD
  • Enclosure Size: 15.75" (W) × 19.75" (H) × 29.75" (D including terminals)
  • Faceplate Color: Black
  • Cycles: 3,000–6,000 (LiFePO4)

Product Size:

  • Dimensions: 15.75" × 19.75" × 29.75"
  • Weight: ~450 lbs 
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