Description
xVictron Energy 12V 165Ah AGM Deep Cycle Battery
The Victron Energy 12V 165Ah AGM Deep Cycle Battery is a sealed, maintenance-free lead-acid battery designed for cyclic applications in solar, off-grid and backup power systems. Rated at C20 capacity, it is suited to professional installations where reliable deep discharge performance and long service life are required.
Key Features
- 165Ah capacity rated at C20 discharge rate, providing a consistent and predictable energy reserve for deep cycle use.
- Absorbed Glass Mat (AGM) construction eliminates free electrolyte, making the battery spill-proof and suitable for installation in enclosed spaces.
- Sealed, maintenance-free design with no requirement for water topping or electrolyte checks during service life.
- Deep cycle optimised plate design supports repeated charge and discharge cycles without the accelerated degradation seen in standard standby batteries.
- 12V nominal voltage allows straightforward series or parallel configuration for 24V or 48V battery banks.
- Weighs 44.5 kg, consistent with the high lead content required for genuine deep cycle performance at this capacity.
- Compatible with Victron MPPT charge controllers, MultiPlus and Quattro inverter/chargers when programmed with the correct AGM charge profile.
Product Overview
AGM deep cycle batteries differ from standard AGM standby batteries in their internal plate construction. The plates are thicker and the active material is formulated to withstand the mechanical stress of repeated deep discharge cycles. This matters in solar and off-grid applications where the battery may be discharged to 50% or below on a daily basis. Using a standby-rated battery in a cyclic role significantly shortens service life; this battery is built specifically for that duty.
The C20 rating means the 165Ah capacity is measured over a 20-hour discharge period. At higher discharge rates the available capacity will be lower, which is standard behaviour for lead-acid chemistry. Charge voltage settings should be configured according to Victron's published AGM profile: typically 14.4V absorption and 13.8V float for a 12V battery. Incorrect charge voltages are the most common cause of premature battery failure, so verifying charger settings before commissioning is essential.
At 44.5 kg, handling and positioning this battery requires care. Two-person lifting or appropriate mechanical handling equipment is recommended during installation. The sealed AGM construction means the battery can be mounted on its side if required, though upright orientation is standard practice.
Specifications
- SKU: BAT412151084
- Nominal voltage: 12V
- Capacity (C20): 165Ah
- Chemistry: AGM (Absorbed Glass Mat)
- Type: Deep Cycle
- Weight: 44.5 kg
- GTIN: 8719076037033
Applications
- Solar energy storage in off-grid residential and commercial installations.
- Battery banks for MultiPlus or Quattro inverter/charger systems.
- Marine and leisure applications requiring deep cycle capability.
- Backup power systems with regular discharge and recharge cycles.
- Mobile and vehicle-based power systems where a sealed, spill-proof battery is required.
- Telecoms and remote monitoring installations with solar charging.
What Is Included
- 1 x Victron Energy 12V 165Ah AGM Deep Cycle Battery
Installation Notes
This battery should be installed by a qualified electrician or accredited solar installer. Ensure the charge source (MPPT controller, inverter/charger or mains charger) is programmed with the correct AGM deep cycle charge profile before connecting. When building a battery bank, use cables of equal length and cross-section to all terminals to ensure balanced charging and discharging across units. Batteries should be installed in a ventilated location even though AGM construction produces minimal gassing under normal conditions. Do not install in direct contact with heat sources or in environments subject to freezing temperatures, as both conditions reduce capacity and service life.
Return Policy
xWe offer a 14-day, no-quibble returns or replacement policy because we want you to be totally satisfied with your purchase.
If you are unhappy in any way with your purchase, you can return it for a refund or a replacement, as long as you return it in the same condition as it arrived (original/undamaged packaging and product) and within 30 days of receiving it. We will pay for your return postage on a faulty item as long as you send it using Royal Mail 2nd class recorded delivery (for EU or International Shipments, you have to use our UPS account, we will provide you with a return label)
Please keep in mind the following:
- Items returned within 14 days but not in their original and undamaged packaging will also incur a -15% charge per package.
- If you return an item that doesn't adhere to our returns procedure or doesn't include a returns form, you may be liable for a £10 administration fee
- Individual items from a bundle can't be returned, refunded or exchanged. If you want a refund/credit/exchange for a bundle, all items must be returned to us.
Before you return your item, please make sure that:
- You follow our returns process (outlined below)
- The goods and packaging are undamaged
IMPORTANT: We need to be able to identify an item with your order. We can only do this if you follow our returns process. Please do not send us items back that do not follow this process as they cannot be identified properly and will not be replaced or refunded.
What delivery method do I need to use when returning an item?
You must send the goods back to us via Royal Mail 2nd class recorded delivery. Refunds on faulty items returned are reimbursed within 5 working days.
Can I return just one item from multiple purchases?
Yes. Once you start the returns process you will go to a page that will allow you to choose which items you want to be replaced or refunded.
Returning faulty goods
If your item is faulty, you need to follow the returns policy, where you will be able to state that it’s faulty. The product will then arrive at our warehouse for testing.
If your purchase is not within 14 days
You can still exchange your item for a different product or for credit to use on the Voltacon Solar or Ledison-led-lights.co.uk websites (-15% from the credit amount).
Returns outside of the 14-day period do not qualify for the free returns policy.
Returning an item within the warranty
If you have a warranty and want to return a faulty item, you just need to follow our standard returns process. When we receive your item, we will then check that it’s within warranty and for any faults before arranging a replacement.