What size is this o-ring?

Don’t know, comes on a kit with the battery and some silicon gel

Does this battery kit work with the aqualung i450t wrist computer?

The 450T takes a CR2450 which is advertised in this kit. The real question is if the oring fits the i450t.

Does this work with the i200 ?

If you are asking if the i200 will Bluetooth sync to the i300, I do not believe they will.

does this come with the tool to open the battery compartment?

Yes mine did come with the tool o ring grease and the battery hope this helps.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Aqua Lung Dive Computer Battery Kit (i100, i300, i300C, i550 Compatible)

Product ID: 43040115

Details

Brand
Aqualung
Item dimensions L x W x H
2 x 2 x 0.25
Material
Silicone
Number of Items
1
Thread Type
Cr2450

🔋CR2450 battery for long-lasting power

🛠️Precision fit for i100, i300, i300C, i550 models

🛡️Full manufacturer warranty for peace of mind

€ 35.56

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Power your adventure with confidence—never miss a dive!

RELIABLE POWER BOOST - Keep your dive computer charged and ready with the high-performance CR2450 battery.
COMPACT LIGHTWEIGHT - Slim 2x2x0.25 inch design fits effortlessly, so you never miss a moment beneath the waves.
SEAMLESS COMPATIBILITY - Designed specifically for Aqua Lung i100, i300, i300C, and i550 models—no guesswork, just perfect fit.
TRUSTED BRAND ASSURANCE - Backed by Aqua Lung’s full manufacturer warranty, ensuring quality and reliability on every dive.
DURABLE SILICONE MATERIAL - Crafted with premium silicone for secure installation and enhanced durability underwater.

The Aqua Lung Dive Computer Battery Kit features a CR2450 battery engineered for reliable, long-lasting performance. Compatible with popular Aqua Lung dive computers (i100, i300, i300C, i550), it comes with durable silicone material and a full manufacturer warranty, ensuring your device stays powered and protected on every underwater journey.

Specifications

ASIN	B01N3D0XFZ
Best Sellers Rank	#209,235 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #29 in Diving Electronics
Brand	Aqualung
Brand Name	Aqualung
Customer Reviews	4.7 out of 5 stars 103 Reviews
Item Dimensions	2 x 2 x 0.25 inches
Item dimensions L x W x H	2 x 2 x 0.25 inches
Manufacturer	Aqua Lung
Material	Silicone
Material Type	Silicone
Model	NS911148
Number of Items	1
Number of Packs	1
Part Number	NS911148
Set Name	Single Battery
Thread Style	Cr2450
Thread Type	Cr2450
UPC	053242319829
Unit Count	1 Count
Warranty Description	Manufacturer warranty

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