ACE Caracas N4L120J Replacement Battery 3.7V 1700mAh Warranty:Warranty 3 Year A Ni-MH pack that has

A Ni-MH pack that has sat in storage can drop low enough in voltage that the base station's charge circuit does not recognise it as a valid battery

The fuel gauge IC is calibrated to the old cell's discharge curve — one slow cycle at standard current lets it map the new cell accurately before high-current charging begins

This happens when the fuel gauge IC triggers a shutdown based on the old cell's voltage cliff map — not the actual state of the new cell

and reduce downtime from weak or aging batteries

Recognized and CE Certified) and brand-new

ACE Caracas N4L120J Replacement Battery 3.7V 1700mAh Warranty:Warranty 3 Year A Ni-MH pack that hasACE Caracas Caracas 2 3. 7V Li ion Replacement Battery (N4L120J) This is a 3. 7V, 1700mAh Li ion cell built to fit the ACE Caracas and Caracas 2 smartphones. It replaces OEM part number N4L120J directly. If your original battery no longer holds charge or the phone shuts down unexpectedly, this cell restores full operation. Caracas and Caracas 2 compatibility: Both models share the same battery bay dimensions, connector pinout, and BMS communication