Mercury Maverick 850VA UPS is now available at Mascom International for KSh 7,000, brand new and sealed, at our Old Mutual Building store on Kimathi Street in Nairobi CBD. The unit delivers 850VA of apparent power and 510 watts of real power through two universal sockets that take Kenyan three-pin plugs directly. A 12V 9Ah sealed lead-acid battery sits inside, and built-in automatic voltage regulation corrects mains input anywhere between 140 and 300 volts. Switchover from mains to battery takes 2 to 6 milliseconds. The Mercury Maverick 850VA UPS ships with its input cord, manual, and warranty documentation.
Kenya Power outages rarely give warning. Accountants closing books in Westlands, cyber cafe operators in Kisii, M-Pesa agents running float on a desktop, and university students finishing coursework all lose unsaved work the moment the lights drop. TheMercury Maverick 850VA UPS holds a typical desktop and monitor drawing 150 watts for roughly 12 to 18 minutes, which is enough time to save files, close applications, and shut down cleanly. Small offices, dental clinics, salons running POS terminals, and home workers on Safaricom fibre use the Mercury Maverick 850VA UPS to keep routers and ONT boxes online through short blackouts.
Unlike other electronics retailers in Kenya who stock backup units without explaining runtime, Mascom International tells you what 510 watts actually carries and for how long. Customers across Nairobi report that voltage swings, not full outages, kill more equipment. The automatic voltage regulation inside the Mercury Maverick 850VA UPS handles those swings without touching the battery, which stretches battery life considerably. At Mascom International, we're seeing steady demand from upcountry buyers in Kitale, Bungoma, and Meru where mains voltage sags below 180 volts during evening peaks. Visit our Kimathi Street store to see the Mercury Maverick 850VA UPS, or order for pay-on-arrival delivery countrywide.
Common Questions About the Mercury Maverick 850VA UPS
How long does the Mercury Maverick 850VA UPS run during a Kenya Power outage?
Runtime depends entirely on load. The 12V 9Ah battery stores about 108 watt-hours, and real usable output sits near 70 watt-hours after conversion losses. A router plus fibre ONT drawing 25 watts runs 90 to 120 minutes. A laptop, monitor, and router at 90 watts run 25 to 35 minutes. A full desktop with monitor at 180 watts runs 8 to 12 minutes. Push toward the 510-watt ceiling and you get four minutes or less.
What does the built-in AVR actually do, and why does it matter in Kenya?
Automatic voltage regulation corrects incoming mains before it reaches your equipment. The Mercury Maverick 850VA UPS accepts anything from 140 to 300 volts, boosting low input or cutting high input back toward 230 volts without drawing on the battery. Kenya Power supply in Ruiru, Juja, and much of the Rift Valley sags well below 200 volts at evening peak. Without AVR, a backup unit would switch to battery constantly and wear the cells out within months.
Can it keep my Safaricom router and fibre modem running through longer blackouts?
Yes, and this is the load it handles best. A Safaricom or Zuku router draws 8 to 12 watts, and an ONT draws another 6 to 10 watts. Combined, they sit under 25 watts, which the Mercury Maverick 850VA UPS supports for 90 minutes to two hours. Working from home in Kilimani or Nyeri, that keeps your video calls and M-Pesa transactions alive through the short outages that hit most Kenyan estates weekly.
Does the Mercury Maverick 850VA UPS work with a generator?
It does. Mercury lists generator compatibility as standard on the Maverick range, and the wide 140 to 300 volt input window absorbs the frequency and voltage wobble that small petrol generators produce when they first take load. The unit sits between the generator and your equipment, cleaning the supply. Businesses in Industrial Area and Athi River pair the Mercury Maverick 850VA UPS with a backup generator so the switchover gap never reaches the computers.
Is 850VA enough for my setup, or should I buy a larger unit?
Add up the wattage printed on your equipment labels and stay under 400 watts for comfortable runtime. Two desktops with monitors, or one desktop plus a router and external drive, fit fine. A laser printer does not, because those pull 800 to 1,200 watts during fusing and trip the overload alarm instantly. Air conditioners, fridges, and kettles are also out. For servers or four workstations and above, step up to a 1500VA or 2000VA model.
Can I plug a gaming PC into the Mercury Maverick 850VA UPS?
A mid-range gaming build with a 550-watt supply usually draws 250 to 350 watts under load, which fits inside the 510-watt rating but leaves only three to five minutes of runtime. That is enough to save a game and shut down, not to keep playing. The simulated sine wave output suits most consumer power supplies. Builds using active power factor correction supplies occasionally reject simulated sine wave, so test yours at our Kimathi Street counter first.
How long does the battery last, and can I replace it myself?
Expect two to three years from the sealed lead-acid battery under Nairobi conditions, and less in hot rooms or where outages hit daily. The single 12V 9Ah cell is a standard size stocked widely in Kenya, and swapping it takes about 15 minutes with a screwdriver. Charging back to 90 percent takes roughly six hours from empty. Mascom International supplies replacement batteries and fits them at our Nairobi CBD service desk.
How is this different from a surge protector or an extension cable?
An extension cable splits one socket into four and does nothing else. A surge protector clamps voltage spikes but goes dark the instant mains fails. The Mercury Maverick 850VA UPS does three jobs: it blocks surges, corrects sagging or excess voltage through AVR, and carries the load on battery when supply drops. Transfer takes 2 to 6 milliseconds, faster than any computer power supply notices, so nothing reboots.
Why buy the Mercury Maverick 850VA UPS from Mascom International at KSh 7,000?
Every unit is brand new and sealed, backed by a 24-month Mascom International warranty on the unit itself. You inspect it and pay only when it reaches you, anywhere in Kenya. Our Nairobi CBD service desk handles claims in person rather than routing you to a distributor. Buyers throughout Kenya tell us that knowing where the shop physically sits matters more than saving a few hundred shillings on the price tag.
Technical Specifications
Power Capacity and Output Rating
- Rated at 850VA apparent power and 510 watts real power, the working number for sizing your equipment load
- Output current reaches up to 3.6 amps, sufficient for two desktop workstations or a desktop plus networking gear
- Battery-mode waveform is simulated sine wave, compatible with most consumer and office power supplies sold in Kenya
- Output voltage regulation holds within plus or minus 10 percent on battery, steady enough for computers and routers
- Nominal output tracks 220 to 240 volts, matching the standard household and small-office supply across Kenya
- Frequency runs at 50 or 60 hertz, so the unit suits both grid supply and generator output
Automatic Voltage Regulation and Input Handling
- Input window spans 140 to 300 volts, covering the sags and surges common on Kenyan distribution lines
- Boost circuitry lifts low incoming voltage toward 230 volts without switching to battery, preserving cell life
- Buck circuitry cuts excess voltage during overvoltage events, protecting connected equipment from slow insulation damage
- Line-interactive design keeps equipment on filtered mains while AVR corrects voltage, switching to battery only on failure
- Transfer time between mains and battery measures 2 to 6 milliseconds, with a 10 millisecond worst case
- Generator compatibility is standard, letting the unit accept the unstable output of small petrol and diesel sets
- Auto restart brings connected equipment back up on its own once Kenya Power supply returns
Battery Capacity and Recharge Behaviour
- One 12 volt 9 amp-hour sealed lead-acid battery stores roughly 108 watt-hours of raw stored energy
- Recharge from empty reaches 90 percent capacity in about six hours from normal mains supply
- Floating charge voltage holds at 13.7 volts DC, preventing the overcharging that shortens lead-acid battery life
- Off-mode charging keeps the battery topped up even when the unit output switch is turned off
- DC start lets you bring the unit up from battery alone when mains is already down
- Deep discharge protection cuts output before the cell drops to a voltage that causes permanent damage
- Battery is user-replaceable in about 15 minutes, and Mascom International stocks the replacement size locally
Protection and Fault Handling
- Overload protection trips the output when connected equipment exceeds 510 watts, guarding the inverter from damage
- Short circuit protection cuts power instantly if a faulty cable or device creates a dead short
- Surge protection absorbs the voltage spikes that follow lightning strikes and transformer switching across Kenyan grids
- Overcharge protection stops charging current once the battery reaches full, extending service life in hot rooms
- Power-on self test runs at startup and flags battery or inverter faults before you trust them
- Battery management circuitry watches cell condition continuously and signals through the fault light when replacement is due
Output Sockets, Indicators, and Alarm Signals
- Two universal output sockets accept Kenyan three-pin plugs, European two-pin plugs, and standard computer kettle leads
- Green steady light indicates line mode, meaning mains supply is present and equipment runs from the grid
- Yellow flashing light indicates battery mode, which is your cue to save work and begin shutting down
- Red steady light indicates a fault condition needing attention before the unit is trusted with equipment
- Battery-mode alarm beeps every 10 seconds, changing to every second when the battery charge runs low
- Overload alarm beeps twice per second, and a fault produces a continuous tone you cannot miss
- Optional no-load shutdown powers the unit down when nothing draws current, saving battery during long outages
Build, Dimensions, and Operating Environment
- Chassis measures 283 by 101 by 140 millimetres, fitting under a desk or beside a tower case
- Net weight is 4.2 kilograms, most of it battery, stable enough to sit unmounted on a shelf
- Operating noise stays below 40 decibels, quieter than normal office conversation and unnoticeable in a home study
- Operating temperature range covers 0 to 40 degrees Celsius, comfortably above Nairobi and Mombasa ambient conditions
- Humidity tolerance reaches 90 percent non-condensing, suitable for coastal offices in Mombasa, Malindi, and Diani
- Input power cord is built in with an inline fuse, so no separate mains cable is needed
Package Contents
- Mercury Maverick 850VA UPS with the 12V 9Ah battery installed and connected
- Built-in input power cord with inline fuse, ready for a standard Kenyan wall socket
- User manual with load-sizing guidance and troubleshooting steps
- Mascom International receipt and warranty card
Note: output cables for your computer and monitor are not supplied, since the two universal sockets accept the power cables already packed with your equipment. Mascom International stocks spare IEC kettle leads separately if you need them.
Warranty
Mascom International backs the Mercury Maverick 850VA UPS with a 24-month warranty covering manufacturing defects on the unit, and a 12-month warranty on the sealed lead-acid battery, which wears as a consumable. Our Nairobi CBD service desk on Kimathi Street handles claims in person, so you never ship the unit abroad or chase a distributor.
Buy the Mercury Maverick 850VA UPS at Mascom International, Old Mutual Building, First Floor Room 4, Kimathi Street, Nairobi CBD. We open Monday to Saturday, 9:00 AM to 7:00 PM. Walk in and we will connect the unit to a test load so you can watch the transfer happen and hear the alarm pattern before you buy.
Three ways to order:
- Phone/WhatsApp: +254 708 852 521
- Email: info@mascomintl.com
- Website: www.mascomintl.com
Pay-on-arrival delivery reaches all 47 counties. Nairobi and its environs receive the Mercury Maverick 850VA UPS the same day. Every other major city and town, including Mombasa, Kisumu, Nakuru, Eldoret, Nyeri, Kakamega, Machakos, Kisii, and Garissa, receives delivery within 1 business day. Mandera, Wajir, Marsabit, Lamu, Tana River, and Turkana receive delivery within 2-3 business days. You inspect the unit and pay only when it reaches you.
Every unit leaves our counter sealed and covered by the 24-month warranty stated above. Our team helps you size the load correctly before you order, so you buy the right capacity the first time. Buyers across Kenya rely on Mascom International for honest runtime figures, current Kenyan pricing, and after-sales support you can walk into.
