All Sentinel Mini models
Sentinel Mini 40 closed battery storage cabinet
Closed three-quarter

Compact double-door cabinet

Sentinel Mini 40 compact double-door lithium battery cabinet

A wider compact cabinet with double-door access for greater usable shelf width below full-height proportions.

Price, standard configuration

$10,105

Ships in 6–8 weeks for most models; custom units 8–10 weeks depending on size. In-stock units may be available but are not guaranteed.

Flat-rate LTL freight: $1,500 per cabinet (contiguous US). California sales tax is added for California deliveries. Installation and optional systems are quoted separately.

Exterior
43” H × 45” W × 26” D
Interior
32” H × 39” W × 16” D
Access
Double doors
Empty weight
Approx. 650 lb

Standard configuration

Standard configuration includes three perforated-steel shelves and a fabricated handling base.

Best fit: Wider battery modules · Service inventory · Compact facility integration

Ask a question about this model Buying several? Get a quote

Need a custom size? Custom units are freight quoted, ship in 8–10 weeks depending on size, and are final sale (non-returnable). Request a custom quote

Safety and scope note: AEL does not claim or guarantee that any enclosure or cabinet will prevent thermal runaway, fire or explosion. Sentinel and Sentinel Mini products are designed to help contain and manage lithium-ion battery storage risk and to support code compliance. The owner is responsible for proper installation and for approval by the Authority Having Jurisdiction (AHJ).

Features

Close-up of white perforated steel shelving inside a Sentinel Mini cabinet

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Perforated steel shelving

Three white perforated steel shelves are the standard starting layout, supporting open airflow paths and configurable spacing.

Close-up of a Stat-X fire suppression option in a Sentinel Mini cabinet

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Stat-X suppression option

Stat-X fire suppression, shown as a configured option. AEL is an approved Stat-X distributor, and final system scope is confirmed by AEL.

Close-up of the external fire control planned for configured Sentinel Mini cabinets

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External control option

An optional external control keeps status and operator functions accessible. Final suppression and control scope is confirmed by application.

Sentinel Mini 40 battery storage cabinet

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Sealed, locking access

Windowless doors, perimeter seals, black pull handles, and discreet locks support controlled access.

Sentinel Mini 60 battery storage cabinet

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Insulated construction

Insulated white solid-panel cabinet with black trim, handles, locks and base, plus side louvers.

Green pallet jack entering the black Sentinel Mini handling base

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Handling access

The black fabricated base provides handling access for placement. Site access and handling plans remain project-specific.

CP2000 advanced ventilation system available as a Sentinel Mini option

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Optional CP2000 ventilation

Optional advanced exhaust package. Configuration and pricing are confirmed by AEL for the application.

Open Sentinel Mini 40 showing the standard shelf configuration

  1. Three perforated steel shelves

    The standard shelf package establishes a defined starting layout. Final spacing is confirmed for the selected battery format.

  2. Locking, sealed access

    Windowless doors, perimeter seals, black pull handles, and discreet locks support controlled access.

  3. Handling base

    The fabricated black base supports planned handling and placement. Site access and final handling remain project-specific.

  4. Application options

    CP2000 ventilation, reinforced shelving, monitoring, electrical work, and fire-assembly options are configured through AEL.

Product views

Closed, open, and straight inside.

Select any photo to expand it and move through the complete model gallery.

Sentinel Mini 40 closed battery storage cabinet Closed three-quarter Expand photo (photo 1 of 4) Sentinel Mini 40 open battery storage cabinet with three perforated shelves Open three-quarter Expand photo (photo 2 of 4) Sentinel Mini 40 straight-on open interior Straight-on interior Expand photo (photo 3 of 4) AEL Sentinel Mini 30, 40, 60, 80, and 100 product family Model family Expand photo (photo 4 of 4)

Before ordering

Four quick answers.

View all Sentinel Mini FAQs
What is included?

Standard configuration includes three perforated-steel shelves and a fabricated handling base.

Can I request information before purchasing?

Yes. Use Request Information for model selection, installation context, or product questions without beginning the standard order path.

Can this unit be customized?

Yes. Use Request Information for reinforced shelving, CP2000 advanced ventilation, monitoring, electrical options, fire-assembly options, or other engineered requirements.

Can this cabinet be reviewed for LiFePO4 batteries?

Yes. AEL can review LiFePO4 and other lithium-ion battery formats. Final suitability depends on the battery, quantity, condition, spacing, intended activity, and installation requirements.

Compare standard models

Other Sentinel Mini sizes.

View family guide

Questions before ordering?

Talk to the Sentinel Mini team.

Tell us about your application and timeline. Our team — not a call center — responds within one business day.

  • Built in-house: fabrication, electrical, controls and suppression by our own team.
  • Approved Stat-X distributor.
  • Factory testing, documented as specified.

Financing available. Explore equipment financing and leasing options

  • Talk to an engineer (888) 502-6695
  • Location 1402 Airport Blvd, Santa Rosa, CA 95403
  • Hours Mon – Fri, 8AM – 6PM PT

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