(m) Installation and or Battery bank size dependantĮlectrical compliance certificates available upon requestġ x Mecer 1kW 12V pure sinewave Inverter including battery. (k) Depending on electrical loads required on back-up system. (j) Installation costs vary depending on a the following factors: Travel, Condition of electrical works, Electrical works required to separate loads, All and or any accessories (DB boards, switch gear, fuses, cables etc.). (i) Single and Three phase options available. (h) Cannot mix old and new batteries for expansion/longer backup periods on batteries older than 1year. Environmental conditions, loads and cycling of batteries all plays a part to battery life spans. Typically 2-4 years for AGM/Lead acid batteries, and 4-10 years on Lithium Iron Batteries. UPS/Inverters/solar Inverter units between 1-2 years. Typically AGM/Lead acid batteries hold a 1 year warrantee. (e) Warrantees on system differ depending on type and brand. SMT Energy encourages the use of Gas (of which is far more economical than electrical), for water heating, kettle, stoves, geysers and the likes. (d) As per point (c) heating elements are discouraged. (c) Any appliance with a heating element is discouraged on a UPS and most smaller Inverter/Solar systems, due to high load and influx of current on the back-up system installed. Run times (depending on battery bank size), can deplete backup times. (b) It is not recommended to run fridge/freezers on smaller UPS units (1-2kVa)with other loads. All systems should be spec'd according to load requirements and client expectations.

For example a 200-400W deep freezer can deplete batteries faster. Loads also have an impact on battery backup times. (a) This all depends on type, capacity and age of Battery. The alphabetical letters below describe the details in the package table above

Battery backup for home appliances