The Photonic Universe 200Ah 12V Gel Battery is a Valve Regulated Lead Acid (VRLA) deep cycle battery using a gel-type electrolyte, giving non-spillable, completely sealed, maintenance-free operation. With double the capacity of the 100Ah version, it suits larger leisure power demands in motorhomes, caravans, and boats, as well as off-grid, backup, and combined solar/wind energy storage.
Nominal Voltage
12V
Capacity
200Ah (10h) / 205Ah (20h)
Max Charge Current
40A
Self-Discharge
<1% per month
Operating Range
-10°C to +50°C
Weight
61.5 kg
What Makes Gel Different from AGM: Gel batteries use a thickened gel electrolyte rather than a glass-fibre mat, giving a wider working temperature range (performing well down to -10°C) and a lower self-discharge rate than typical AGM batteries.
Check Charging Current and Handling Weight: This battery's maximum charging current is 40A — confirm your charge controller or charger stays within this limit and uses a Gel-compatible charge profile. At 61.5kg, plan for adequate support and two-person handling when installing or removing this battery.
Sealed Gel Construction
Completely sealed and maintenance-free, with no electrolyte top-ups required, and reduced internal corrosion and degradation compared with a standard wet-cell battery.
Wide Working Temperature Range
Performs well in cold conditions down to -10°C, suiting boats and vehicles used through UK winters where temperatures regularly drop.
Very Low Self-Discharge
At under 1% per month, this battery retains its charge exceptionally well during storage periods between trips or seasonal use.
Higher Capacity for Bigger Loads
At 200Ah, this battery supports higher daily energy demands than the 100Ah version, suiting larger leisure setups with more onboard appliances.
Strong Deep-Discharge Recovery
Recovers well after being deeply discharged, suiting leisure use where the battery is run down overnight and recharged the next day.
Long Service Life
Typically lasts more than 5 years, and up to 10 years with good care, backed by resistance to shock and vibration for mobile installations.
| Electrical Specifications |
| Nominal Voltage |
12V |
| Nominal Capacity |
200Ah (10-hour rate) / 205Ah (20-hour rate) |
| Maximum Charging Current |
40A |
| Self-Discharge Rate |
<1% per month |
| Cycle Lifetime (at 30% D.O.D.) |
1200–1300 cycles |
| Pressure Control |
Safety valve installed |
| Physical & Build Specifications |
| Battery Technology |
Gel (VRLA), sealed lead-acid |
| Terminal Type |
F24 (bolts and washers included) |
| Operating Temperature |
-10°C to +50°C |
| Dimensions (L x W x H) |
523 x 239 x 243 mm |
| Weight |
61.5 kg |
| Typical Service Life |
More than 5 years typical, up to 10 years with good care |
| Included in Box |
Battery, user manual, terminal bolts and washers |
| Warranty |
1 year |
What's the difference between this and the 100Ah Gel battery?
This 200Ah battery offers roughly double the capacity of the 100Ah version, supporting a higher maximum charging current of 40A (versus 20A), but it's also significantly heavier at 61.5kg compared with 30.3kg, and uses larger F24 terminals.
Is this battery suitable for a solar charging setup?
Yes — this battery has excellent solar charge acceptance. Make sure your solar charge controller's output current doesn't exceed the battery's 40A maximum charging current, and that the controller supports a Gel-specific charge profile if available.
Does this battery cope well with cold weather?
Yes — Gel batteries have a wider working temperature range than typical AGM batteries and perform well in cold conditions down to -10°C, suiting winter use in a boat or motorhome.
How heavy is this battery, and how should I handle it?
This battery weighs 61.5kg, so plan for a well-supported, ventilated mounting location and consider two-person lifting when installing or removing it, particularly in confined boat or vehicle battery compartments.
How long will this battery last?
Typical service life is more than 5 years, and with good care it can last up to 10 years. Cycle life is rated at 1200–1300 cycles at 30% depth of discharge.
