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JAG35

48V DIY AmpBox Slim 14.56 kWh LiFePO4 280Ah Narrow 8.5"

48V DIY AmpBox Slim 14.56 kWh LiFePO4 280Ah Narrow 8.5"

$1,499.00 USD
$2,600.00 USD $1,499.00 USD
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📦 Ships in 7-10 days

14.56 kWh – Slim, space‑saving, and DIY‑ready

Designed for builders who need maximum power in the smallest footprint, the 48V DIY AmpBox Slim uses a clever 8‑over‑8 vertical cell layout to achieve a super‑narrow 8.5" width without sacrificing capacity. Powered by 16 × 280Ah LiFePO4 cells, this compact enclosure is perfect for tight installs, equipment closets, RV bays, workshops, and anywhere space is at a premium.

What’s Included

  • 📦 Steel AmpBox Slim Enclosure (narrow 8.5" design)
  • 🔋 16 × 280Ah LiFePO4 Cells (8‑over‑8 stacked layout)
  • 🟥 48V PCB Busbar System (clean, low‑resistance, DIY‑friendly)
  • ⚡ JK 150A Smart BMS (LCD screen, CANBUS & RS485)
  • 🔒 Terminal covers for safety and protection
  • 🛠 DIY assembly format — enclosure + components ready for your build

You’ll Also Need

  • 🔌 48V‑compatible inverter
  • 🔗 Proper DC cabling, lugs, and fusing
  • 🧰 Basic tools for DIY assembly

Key Features

  • ✔ 14.56 kWh Nominal Capacity (52V × 280Ah)
  • ✔ Ultra‑narrow 8.5" width — fits where standard batteries can’t
  • ✔ Vertical 8‑over‑8 cell layout for efficient use of height
  • ✔ JK 150A Smart BMS with LCD + CANBUS/RS485
  • ✔ DIY‑friendly design with PCB busbars and clean internal routing
  • ✔ Steel enclosure for durability and long‑term reliability
  • ✔ Ships to Lower 48 (LTL freight)

🔌 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 what a 14.56 kWh AmpBox Slim can power (based on ~14.1 kWh usable energy):

  • 🏠 Mini‑split AC (1,200 W):
    ≈ 11.7 hours
  • 🔌 Home office setup (300 W):
    ≈ 47 hours
  • 🧊 Refrigerator (150 W):
    ≈ 94 hours (~4 days)
  • 🔧 Power tools (1,800 W):
    ≈ 7.8 hours
  • 🚐 RV essentials (500 W):
    ≈ 28 hours
Actual runtime varies based on inverter efficiency, load fluctuations, and temperature.

Runtime Calculator

Estimate how long this battery can power your load:


Based on 14.56 kWh nominal, 97% DoD, 97% inverter efficiency (~14.1 kWh usable).

AmpBox Specifications

  • Nominal Capacity: 14.56 kWh
  • Voltage: 48V nominal (52V full)
  • Configuration: 16S (16 × 280Ah LiFePO4 cells)
  • Cell Layout: Vertical 8‑over‑8 stacked format
  • Communication: CANBUS / RS485
  • Cell Dimensions: 208 × 174 × 72 mm
  • BMS: JK 150A Smart BMS with LCD
  • Enclosure Size: 8.5" (W) × 19" (H) × 28.25" (D)
    ≈ 216 mm × 483 mm × 718 mm
  • Cycles: 3,000–6,000 (LiFePO4)
  • Material: Powder‑coated steel

Product Size:

  • Dimensions: 8.5" × 19" × 28.25" (≈ 216 × 483 × 718 mm)
  • Weight: ~300–340 lbs (varies by batch)
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