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KILO HP40 40ah sodium ion battery

KILO HP40 – 40ah Sodium Ion Battery

$749.99

40ah sodium ion battery. 17C constant / 20C burst discharge, actively balanced, 12 POS / 12 NEG connection points, 375A max alternator charging. 22 lbs.

Discontinued · specs kept online

Ultimate wiring flexibility — accepts lug and direct wire connections
Inputs & wiring12+ / 12− inputs — lug & direct wire

Every terminal takes a lug and direct wire at the same time — no adapters, no distribution blocks.

Need help? Installation guideCharging & safetyWarrantyIs this the right pack?

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You’ll need a way to charge it AECharger · $70.00 Programmable CV/CC bench supply. Set the voltage and current to your pack’s charging window and top it off between sessions.
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SKU: Kilohp40
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Description

⚠️ OUT OF STOCK — next shipment is set to release in December

Pre-orders open in November. Every KILO HP is built to order from our next cell shipment. Check back in November or follow us on Facebook — we will announce the moment pre-orders open.

Features

  • Extremely safe Sodium Ion chemistry
  • High discharge rate (17C constant, 20C burst)
  • Actively balanced
  • 16 × 34168 sodium-ion cells (4S4P) · 1,500+ cycles to 70% capacity
  • Wide charging range (13.8v-15.5v)
  • Temp range (−40F to 140F)
  • 12 POS / 12 NEG connection points, accepts both lug and direct wire connections at the same time
  • Max Alt Charging – 375A

Dimensions

Length 9.92″ · Width 7.53″ · Height 8.65″ · Weight 22 pounds

True Amplifier Power Ratings

15.5V Charging (Recommended)

  • 7,000W – Standalone (Constant)
  • 8,000W – With Stock Alt
  • 9,000W – With 200A Alt
  • 10,000W – With 300A Alt

14.8V Charging

  • 6,000W – Standalone (Constant)
  • 7,000W – With Stock Alt
  • 8,000W – With 200A Alt
  • 9,000W – With 300A Alt

14.4V Charging

  • 5,700W – Standalone (Constant)
  • 6,700W – With Stock Alt
  • 7,700W – With 200A Alt
  • 8,700W – With 300A Alt

14.0V Charging

  • 5,500W – Standalone (Constant)
  • 6,500W – With Stock Alt
  • 7,500W – With 200A Alt
  • 8,500W – With 300A Alt

Charging rules

Charging window 13.8 – 15.5V. Hard limit 15.5V — never above. Ships at roughly 30% state of charge (around 11V) — bench-charge to your vehicle voltage before install. 10A is plenty. Full details on our Support page.

Additional information

Weight 22 lbs
Dimensions 9.92 × 7.53 × 8.65 in

Specifications

Battery & capacity

Chemistry
Sodium ion
Capacity
40Ah
Output
7,000W constant at 15.5V

Discharge

Continuous
680A
Maximum
800A
Rate
17C constant, 20C burst
Discharge cutoff
10V

Charging

Charging window
13.8V – 15.5V
Hard limit
15.5V — never above
Alternator
375A

Cells

Cell
34168 cylindrical sodium-ion · 10Ah · 3.1V nominal (31Wh)
Configuration
4S4P · 16 cells
Pack energy
496Wh nominal at 12.4V
Per-cell limits
4.0V max charge · 2.0V cutoff (pack: 16.0V / 8.0V)
Cell weight
8.3 lb of cells

Physical & ownership

Weight
22 lbs.
Dimensions
9.92″ × 7.53″ × 8.65″
Operating temperature
−40 to 140°F (−40 to 60°C)
Cycle life
1,500+ cycles (to 70% capacity)
Balancing
Active balancer, no BMS cutoff
Warranty
1-year limited

Every pack arrives at roughly 30% state of charge. Charge it to your system voltage on the bench before installing — see the installation guide.

Running more than one pack?

Charging windows & pairing.

Every pack has a voltage window it lives in. This chart is zoomed to the KILO sodium so you can see at a glance what it shares a bank with — and where to set your charging system when it does.

Charging windows · zoomed to this packboth packs happy outside this pack’s window
13.5V14V14.5V15V15.5V16V
KILO sodiumthis pack
floor 13.8Vlimit 15.5V
AE LTO15.2V – 15.5V together
15.2V – 16.2V
AE LV LiFePO413.8V – 14.6V together
12.8V – 14.6V
THE DON NMC14.8V – 15.5V together
14.8V – 16.6V
  • Any other KILOPairs freely — same chemistry, same window. On a mixed KILO bank the ceiling is 15.5V (only the HP 200 takes 16V).
  • AE LTOPairs inside 15.2V – 15.5V · set 15.5V. Below 15.2V the AE LTO is undercharged; above 15.5V the KILO sodium is past its limit.
  • AE LV LiFePO4Pairs inside 13.8V – 14.6V · set 14.6V. Below 13.8V the KILO sodium is undercharged; above 14.6V the AE LV LiFePO4 is past its limit.
  • THE DON NMCPairs inside 14.8V – 15.5V · set 15.5V. Below 14.8V THE DON NMC is undercharged; above 15.5V the KILO sodium is past its limit.
How pairing works

Read the chart. Red is where this pack is outside its own window. Another chemistry can share the bank only where its bar crosses the clear area — the yellow band — and the charging system must sit inside it. Set it at the white marker, the top of the band: at the bottom of the band the pack with the higher floor is undercharged and never reaches rated output; above the top the pack with the lower ceiling is past its hard limit.

Sodium ion is the only chemistry that mixes. Lithium chemistries (LTO, LiFePO4, NMC) are never banked together — that is unsafe, and we do not support it.

On any bank: matched cable lengths so the packs share evenly, and bring every pack to a similar state of charge before connecting.

Documentation

Everything that ships with it.

Published openly rather than hidden in the box. Read it before you buy if you want to know exactly what you are taking on.

Guide

Installation guide

Pre-charge, mounting, cable order and first power-up.

Open →Reference

Charging windows

Every window and hard limit, including the discontinued models.

Open →Safety

Safe handling

Short circuit risk, venting, and correct fire response.

Open →Testing

Cell test results

Independently tested at an accredited lab. Short circuit peaked at 70°C against a 170°C limit.

Open →Coverage

Warranty terms

What is covered, what voids it, and how to claim.

Open →Register

Register your pack

Order number, install date, charging voltage and install photos — one email and you are on file.

Open →
Before you buy

Worth reading first.

Sizing

How to size a battery bank

Amp-hours tell you how long, C-rate tells you how hard. The full calculation worked with real numbers.

Chemistry

Sodium vs LTO vs LiFePO4

Your charging voltage decides your chemistry. An honest comparison, including when the cheaper one wins.

Diagnostics

Why voltage drops on the hit

Five checks before you buy another battery. Most of the time the pack is innocent.

Charge it properlyThe AECharger lets you set your exact voltage and current — the right way to bench-charge a new pack.