VODNO promise customer 1-3 years warranty based on battery performance,any unqualified battery are credit replacement within 1-3 years, no extra maintenance fees. but VODNO has no obligation under this Limited Warranty for Product subjected to the following conditions (including but not limited to):

*Damage caused during shipping or mishandling of the Product

*Damage due to improper installation; loose terminal connections, under-sized cabling, incorrect series (cannot be used in series) or parallel connections, reverse polarity connections or insufficient space for airflow

*Environmental damage such as inappropriate storage conditions as defined by the VODNO, exposure to extreme hot or cold temperatures, fire or freezing, or water damage, impact or collision

*Damage due to improper operation or maintenance such as under- or over-charging the Product, cold temperature charging, lack of cleaning resulting in corroded terminal connections or build-up of dirt, debris, organic matter, fossil fuels or chemicals on the Product casing

*Improper use of CAN cables such as improper connections or not connecting them

*Installing CAN communication devices that do not follow the appropriate CANbus guidelines as defined by the VODNO

*Product that has been opened, modified or tampered with

*Tampering or removal of manufacture date codes

*Product that was used for applications other than which it was designed and intended for by the VODNO

*Product that was under-sized for the application

This Limited Warranty does not cover a Product that has reached its normal end of life due to usage which may occur prior to the Warranty Period. A battery can deliver only a fixed amount of Energy over its life which will occur over different periods of time depending on the application. The Manufacturer reserves the right to deny a warranty claim if the Product is determined, upon inspection, to be at its normal end of life even if within the Warranty Period.