The Photonic Universe 100Ah 12V AGM Battery is a deep cycle leisure battery built using Absorbed Glass Mat (AGM) technology, where the electrolyte is held in a glass-fibre mat rather than free liquid. This makes the battery completely sealed, non-spillable, and maintenance-free — a safe, low-fuss power source for motorhomes, caravans, campervans, boats, and off-grid or backup power systems. Its excellent solar charge acceptance also makes it a strong match for solar and wind charging setups.
Nominal Voltage
12V
Capacity
100Ah (10h) / 105Ah (20h)
Max Charge Current
25A
Cycle Life
1000–1100 @ 30% DoD
Self-Discharge
<3% per month
Weight
30.0 kg
What "Deep Cycle" Means: This battery is built for applications involving regular deep discharge — such as running leisure loads in a caravan or boat overnight — rather than the brief high-current bursts of a standard starter battery. This makes it well suited to solar and wind energy storage, backup power, and off-grid systems.
Charging Current Limit: The battery's maximum charging current is 25A. When sizing a solar charge controller, wind charge controller, or mains battery charger for this battery, make sure the charging current is set at or below this limit to avoid excessive heat build-up and premature ageing.
Operating Temperature Range: This battery is rated for operation between +10°C and +40°C. Charging or discharging outside this range can reduce performance and shorten service life — consider battery insulation or a heated compartment for cold-weather or winter use.
Sealed AGM Construction
With electrolyte fully absorbed into a glass-fibre mat, the battery is non-spillable and maintenance-free, removing the need to check or top up electrolyte levels over its service life.
Flexible Mounting Position
Unlike flooded lead-acid batteries, this AGM design doesn't need to stay strictly upright, giving more flexibility when fitting it into tight battery compartments on boats and vehicles.
Shock & Vibration Resistant
The glass-mat internal structure gives better resistance to shock and vibration than wet-cell batteries, suiting the constant motion of a moving vehicle or boat underway.
Strong Deep-Discharge Recovery
The battery recovers well after being deeply discharged, an important trait for leisure use where the battery is routinely run down overnight and recharged the next day.
Low Self-Discharge
At under 3% self-discharge per month, the battery holds its charge well during storage — useful for seasonal boats or motorhomes that aren't in constant use.
Ready to Install
Supplied with terminal bolts and washers plus a user manual, so the battery is ready to wire into your existing system without needing to source extra hardware.
| Electrical Specifications |
| Nominal Voltage |
12V |
| Nominal Capacity |
100Ah (10-hour rate) / 105Ah (20-hour rate) |
| Maximum Charging Current |
25A |
| Self-Discharge Rate |
<3% per month |
| Cycle Lifetime (at 30% D.O.D.) |
1000–1100 cycles |
| Pressure Control |
Safety valve installed |
| Physical & Build Specifications |
| Battery Technology |
AGM (Absorbed Glass Mat), sealed lead-acid |
| Terminal Type |
F13 (bolts and washers included) |
| Operating Temperature |
+10°C to +40°C |
| Dimensions (L x W x H) |
331 x 173 x 217 mm |
| Weight |
30.0 kg |
| Typical Service Life |
3–5 years typical, up to 6–8 years with good care |
| Included in Box |
Battery, user manual, terminal bolts and washers |
| Warranty |
1 year |
What does AGM mean, and why is it better than a standard wet-cell battery?
AGM stands for Absorbed Glass Mat — the electrolyte is absorbed into a glass-fibre mat instead of sitting as free liquid. This makes the battery sealed, non-spillable, and maintenance-free, with less internal corrosion and degradation than a standard wet-cell battery, giving it a longer service life.
Is this battery suitable for a solar charging setup?
Yes — this battery has excellent solar charge acceptance and is a common choice for solar charging kits. Just make sure your solar charge controller's output current doesn't exceed the battery's 25A maximum charging current.
Does this battery need to be kept upright?
No — one of the benefits of AGM construction is that the battery's position doesn't have to be upright at all times, giving more flexibility for fitting in awkward spaces compared with a flooded lead-acid battery.
How long will this battery last?
Typical service life is 3–5 years, though with good care — avoiding deep over-discharge and staying within the rated operating temperature — it can last 6–8 years. Cycle life is rated at 1000–1100 cycles at 30% depth of discharge.
What's included when I buy this battery?
The battery is supplied in a carton box along with a user manual and the terminal bolts and washers needed to connect it, so it's ready to wire straight into your system.
