Description
xVictron Energy 12V 165Ah Gel Deep Cycle Battery
The Victron Energy 12V 165Ah Gel Deep Cycle Battery is a sealed, maintenance-free lead-acid battery designed for cyclic and standby applications in solar, off-grid and marine systems. With a C20 rated capacity of 165Ah, it suits installations where reliable deep discharge performance and long service life are required without the need for regular electrolyte maintenance.
Key Features
- 165Ah capacity rated at C20, providing a consistent and predictable discharge curve for system sizing.
- Gel electrolyte construction eliminates free liquid, making the battery safe for installation in enclosed or tilted positions.
- Sealed, valve-regulated design requires no water topping and produces no acid fumes under normal operating conditions.
- Deep cycle rated, built to withstand repeated discharge and recharge cycles typical of solar and off-grid use.
- 12V nominal voltage, compatible with standard 12V charge controllers, inverters and battery chargers.
- Victron Energy manufacture, backed by the brand's established quality control and technical support network.
- Weight of 48.4kg reflects the substantial lead content that underpins its capacity and cycle life.
Product Overview
Gel batteries use a silica-based gelled electrolyte rather than free liquid acid. This construction prevents electrolyte stratification and reduces the risk of acid spills, which makes them well suited to installations where the battery may not always be perfectly upright or where ventilation is limited. The gel also tends to perform better than flooded lead-acid in partial state-of-charge conditions, which is a common operating mode in solar applications where charging is weather-dependent.
At 165Ah (C20), this battery provides a usable capacity of approximately 82Ah when discharged to the recommended 50% depth of discharge for cyclic use. This should be factored into system design when calculating autonomy. The 12V format allows flexible configuration: batteries can be connected in series to build 24V or 48V banks, or in parallel to increase total capacity at 12V.
Gel batteries require a charge profile specifically suited to their chemistry. Charging voltage limits are lower than for flooded batteries, and exceeding them will cause irreversible damage to the gel structure. It is essential that any charger, solar charge controller or inverter-charger used with this battery is set to the correct Victron gel charge profile before commissioning.
Specifications
- SKU: BAT412151104
- Nominal voltage: 12V
- Capacity (C20): 165Ah
- Battery type: Gel Deep Cycle, valve-regulated lead-acid (VRLA)
- Weight: 48.4kg
- GTIN: 8719076037057
Applications
- Solar off-grid systems requiring a deep cycle battery bank at 12V, 24V or 48V.
- Marine and narrowboat house battery banks where a sealed, spill-proof construction is required.
- Motorhome and vehicle leisure battery installations with limited ventilation.
- Remote telecoms, monitoring or control equipment with solar or wind charging.
- UPS and backup power systems requiring a maintenance-free standby battery.
What Is Included
- 1x Victron Energy 12V 165Ah Gel Deep Cycle Battery
Installation Notes
This battery weighs 48.4kg. Two people and appropriate lifting equipment are required for safe handling and positioning. Ensure the charge source (solar charge controller, inverter-charger or standalone charger) is configured to the correct gel charge profile before connecting. Do not use a charge profile intended for flooded or AGM batteries, as incorrect charging voltages will permanently damage the gel electrolyte. Battery installations forming part of a solar PV or off-grid system should be carried out by a qualified electrician or MCS-accredited installer. Ensure adequate terminal protection and appropriate fusing in line with BS 7671 wiring regulations.
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:
- Non-faulty items returned after 14 days and/or not in their original, undamaged packaging can only be exchanged for store credit - 15% off the items returned.
- 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.