EL
BG
DE
ES
FR
ITFrequently Asked Questions · Batteries
What warranty do VRLA lead-acid batteries with AGM technology come with?
Batteries of ≤28 Ah have a 12-month warranty and those of >33 Ah have 24 months, with the registration form completed within 10 days and a copy of the invoice. Otherwise, the warranty starts from the date of sale.
The warranty period depends on the battery capacity, as shown in Ah on its label. Fill in the warranty form within 10 days of purchase and keep a copy of the invoice; otherwise, the start date is calculated from the date of sale.
A lead-acid battery is a consumable: its capacity declines gradually, even with correct use. Wear is accelerated by high temperatures, deep discharges, long periods left discharged and charging at the wrong voltage. That is why its performance over time depends heavily on operating conditions.
To keep the battery in good condition, use a charger or UPS with settings suitable for AGM batteries, install it in a cool place and recharge it immediately after a discharge. If it is kept in storage, recharge it periodically.
A common mistake is mixing new batteries with old ones in the same string, or batteries of different capacities. The weakest battery puts a strain on the others and shortens the life of the whole bank.