Celestron Car Battery Adapter for NexStar Telescopes - AUX Splitter

Our review of the Celestron Car Battery Adapter for All NexStar Telescopes finds it a practical accessory for observers who need reliable DC power and an extra auxiliary connection in the field. Designed for use with CGE, CPC, Advanced GT and NexStar series mounts, this adapter combines a cigarette-lighter style power lead with a compact AUX port splitter so you can run the mount from a 12V source while adding a second auxiliary output. For anyone who camps out for dark-sky sessions or uses accessories that require two AUX ports, this accessory solves a common power and connection limitation simply and robustly.

Key Features

• Direct car power: Lets you plug your computerized mount into a vehicle cigarette-lighter or compatible 12V supply so you can run long sessions away from AC power.
• Aux port splitter: Provides two 6-pin auxiliary outputs from one 6-pin input so accessories like auto align modules can be used simultaneously with the mount.
• Wide mount compatibility: Works with CGE, CPC, Advanced GT and NexStar series telescopes so buyers with common Celestron mounts are covered.
• Durable connections: The cable and metal fitting reported by users offer a solid, reliable physical interface for field use and frequent plugging and unplugging.
• Long cable reach: The extended cord length makes it easy to position a power source at a distance from the telescope base without strain on connectors.

Who It's For

This adapter is aimed at amateur astronomers who take computerized Celestron mounts into the field and need a simple, dependable way to run the mount off a 12V battery or a car. It is especially useful for observers who own accessories like the StarSense Auto Align that require two auxiliary ports on mounts that only include one.

It is less relevant for users who never travel from AC power or who already have a dedicated multi-output power system; those buyers should look for power distribution solutions with fused outputs or integrated battery management instead.

Pros & Cons

Pros

• Provides both a cigarette-lighter style power connection and an AUX port splitter in a single compact cable.
• Compatible with a broad range of Celestron mounts common to hobbyists and club members.
• Users praise the build quality, long cable length, and reliable metal fitting for field use.

Cons

• Does not include power conditioning or fusing, so users should manage battery voltage and protection externally.
• Not a replacement for a full multi-output power distribution box if many accessories need independent fused feeds.

Specifications

Product type	Car battery adapter with AUX port splitter
Compatible mounts	CGE, CPC, Advanced GT and NexStar Series
AUX ports	Two 6-pin auxiliary outputs and one 6-pin input
Power input	12V cigarette-lighter style DC
Package dimensions	19.05 L x 2.286 H x 14.223 W cm
Color	Black

Our Verdict

The Celestron Car Battery Adapter with AUX splitter is a straightforward, well-built accessory for NexStar and related mounts that need a second auxiliary port while running from 12V. It is best for observers who want a compact solution to power and accessory connectivity in the field; it represents good value when compared to buying separate cables or more complex power systems, though users should add external protection if needed.

Frequently Asked Questions

Will this let me power my NexStar mount from a car?
Yes. Plug the round DC connector into the telescope drive base and insert the adapter into a cigarette-lighter style 12V outlet or compatible DC supply.

Can I use the splitter for StarSense Auto Align?
Yes. The splitter creates the extra auxiliary port required to run accessories like the StarSense on mounts with only one built-in AUX port.

Does the adapter include fuses or voltage regulation?
No. It provides direct DC connection and AUX splitting; users should manage battery condition and use fused power sources or inline protection if desired.