Experience Unmatched Solar Power Storage with the Okaya Solar Battery ST 040H
When it comes to reliable solar energy storage, the Okaya Solar Battery ST 040H stands out. This tubular battery, boasting a rated capacity of 40Ah @ C10 and 36-month warranty, is your key to uninterrupted power.
Invest in the future of energy storage with the Okaya Solar Battery ST 040H. Whether you're looking to power your solar applications at home sustainably, ensure business continuity during outages, or explore off-grid adventures, this battery is your trusted partner in energy independence. With outstanding reliability and performance, it's time to embrace the power of the sun with confidence.
Order your Okaya Solar Battery today and step into a brighter, more sustainable future. Power your world with Okaya!
• Designed cycle life at C10 discharge (at 27° C, 1.80 VPC)
• Ultra low-maintenance due to low antimony content
• Excellent Ampere-hour and Watt-hour efficiency
• Ultra low-rate of self discharge
• Designed to operate in partial state of charge condition
• Efficient in hybrid applications
• 6 Ceramic water level indicators for each vent hole
• Pressure Die cast terminals, free from voids for high strength
• Highly efficient PE Envelope Separator from DARAMIC, USA
• Superior Voltage - Ideal for cyclic applications due to superior voltage and energy output profile
• Capacity @C10: 40Ah
• Dimensions: Length*Width*Total Height = 407 * 176 * 245 mm (±2 mm)
• Net weight: 22.00 kg (±3%)
• Warranty: 36 months
• Back up at 100W: ≥3 hrs : 30 mins.
At 100W load, this battery delivers roughly 3 hours 30 minutes of backup — suitable for light loads like a few LED lights, a fan, and basic charging. If your essential appliances draw significantly more than 100W combined, you'd want to calculate your actual load and consider a higher-Ah model instead.
Both share the same 40Ah capacity, but the 040S carries a longer 60-month warranty (versus this model's 36 months) and is built slightly heavier (23.5kg vs 22kg) to support that extended coverage period — the choice comes down to whether the longer warranty period justifies the price difference for your use case.
Tap water contains minerals and impurities that cause sulfation and corrosion inside the cells, shortening battery life and reducing backup over time. Always use distilled or demineralized water for top-ups — this battery's ceramic water level indicators make it easy to check when a top-up is actually needed.
The battery includes 6 ceramic water level indicators, one per vent hole — a quick visual check every 1–3 months (depending on usage and climate) tells you if a top-up is needed, without having to guess or remove vent plugs unnecessarily.
It's designed for cyclic, daily-use applications — built to operate reliably even in a partial state of charge, which is exactly the pattern solar systems create (charging during the day, discharging at night), unlike batteries designed mainly for occasional grid-outage backup.
It covers manufacturing defects under normal use conditions for 36 months from purchase. As with most battery warranties, proper installation, correct water maintenance, and avoiding chronic deep discharge are typically required to keep coverage valid — confirm specific terms with your dealer at the time of purchase.
At OKAYA, we offer a wide range of power solutions for various applications. Take a look today!
OKAYA POWER PVT. LTD.
ENERGIS D-7, 3rd & 4th Floor, Rohtak Rd,
Udyog Nagar, Mangolpuri,
New Delhi - 110041, INDIA
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