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If you have found the batteries are defect, please collect the below information. This will help us to identify the issue and provide you the replacement batteries on warranty.

UPS model	Serial Number	Battery Type	Battery Voltage	Battery Batch	Quantity
10000 PRT	181023-2342342	CSB HR1234W	6V-7V	170326NV11	8
VFI 10000 PRT	181023-2342342	CSB HR1234W	6V-7V	170326NV12	12
VFI 3000 RMG	83121508101520	CSB UPS12460	13.1V	150326NC16	5
VFI 3000 RMG	83121508101520	CSB UPS12460	7.2V	150326NC16	1
etc..

Please note that a single UPS might have batteries from several batches, please list them separately. In most cases the voltage in the whole string remains in a certain, narrow range, i.e. 6-7VDC, you can group them in the list. If you find a battery, which is significantly different condition, please list it separately.

Different batteries have the batch number printed/stamped on different places, but it is always easy to find: