Kastar Replacement Battery Pack 3.7V 1900mAh (2-Pack)

Kastar 2-pack replacement lithium-ion batteries (3.7V, 1900mAh) designed to restore power to compatible URC universal remote controls quickly and reliably.

If your URC remote has grown sluggish or stopped responding, these Kastar replacement cells are sized and specified to match the original rechargeable pack used in many MX and X-series remotes. This listing includes two high-density 1900mAh Li-ion batteries that fit the listed URC models and arrive ready to swap in for minimal downtime. They are intended as direct replacements for worn-out internal battery modules so you can avoid buying a new remote.

Will these batteries fit my URC remote model?

These Kastar batteries are compatible with a broad range of URC universal remotes, including MX-series and several legacy models. Confirm the model printed on your remote or inside its battery compartment before ordering to ensure the connector and dimensions match.

• Compatible models: URC 11N09T / NC0910 / RLI-007-1 / LIT0404
• Also fits: URC MX-810, MX-880, MX-890, MX-950, MX-980, MX-990, MX-1200, and URC X-8
• Sold as a 2-pack so you can replace both cells at once if required

How long will a single charge last compared to the original battery?

With a 1900mAh capacity at 3.7V, these Li-ion cells are specified to approximate the original battery performance in typical remote use. Actual runtime depends on features like backlighting and RF/IR transmission habits, but capacity parity means similar standby and active durations.

• Rated capacity: 1900mAh for extended usage between charges
• Voltage: 3.7V — matches standard URC rechargeable packs
• Battery chemistry: lithium-ion for consistent discharge and recharge cycles

How do I install these replacement batteries safely?

Installation is straightforward for anyone comfortable opening the remote’s battery compartment or casing. Power down the remote, remove the old battery pack, note the connector orientation, and plug the new pack in with matching polarity. If the remote requires soldering or adhesive removal, follow manufacturer guidance or seek professional help.

• Turn off the remote and remove external screws if needed
• Disconnect the old pack, then connect the Kastar pack with the same polarity
• Reassemble the housing and perform a full charge cycle before regular use

What should I expect regarding safety and lifespan?

These Kastar Li-ion batteries are designed for standard rechargeable device use, but like all lithium cells they should be handled and charged with compatible chargers and within recommended temperatures. Proper charging, avoiding deep discharges, and not exposing the pack to extreme heat will help preserve cycle life.

• Use only the remote’s recommended charging method and voltage
• Avoid puncturing, shorting, or exposing batteries to high temperatures
• Replace both batteries if the old pack shows swelling or leakage

Who is this for: This Kastar 2-pack is aimed at owners of compatible URC universal remotes who need a reliable, direct replacement for an aging internal battery. It’s suited to DIYers comfortable opening a remote housing, electronics repair shops replacing remote packs for customers, and anyone wanting to restore original battery capacity without replacing the entire remote. Check model compatibility before purchase and follow safe installation practices to maximize performance and lifespan.