BATTERY DISCLAIMER
Lead Acid Batteries | Gel Batteries | AGM batteries
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12V/24 INVERTER BATTERY LIFE WHEN USING SEMI SEALED FLOODED OR VRLA LEAD ACID BATTERIES BRANDS: ENERGIZER, RED, BLU, NARADA, RITAR & FORBATT BATTERIES. S&L has been supplying high quality semi sealed flooded & VRLA lead acid batteries into 12/24volt inverters in the market for the past 10 + years
With the recent unprecedented power challenges in South Africa, it is important to understand the warranty and life expectancy of your battery. The warranty covers manufacturing and material defects only; it does not guarantee that your batteries will last 12 months or more without a reduction in capacity/runtime. Premature capacity/runtime loss due to Load Shedding conditions include:
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1. Number of discharges and recharges (Cycle Life)
-Eskom’s load shedding schedules of proposed daily blackouts are in a range of up to two – four times per day and up to four hours duration and more in some instances; therefore the application is not standby but cyclic.
-With load shedding frequencies from two to four times daily – these daily load shedding conditions represent a cyclic application – meaning a greater demand on the battery combined with shorter recharge times. The net result is a possible premature capacity loss of your battery.
-Both these Sealed Maintenance Free lead acid batteries are designed for infrequent load shedding backup systems.
-The average life span for semi sealed wet lead acid batteries during infrequent power outages is 2 to 3 years.
-Valve Regulated Lead acid (VRLA) batteries are designed for infrequent load shedding with an average life span of 4-5 years. INFORMATION MATRIX 674S RED/BLU 674D 100G 24V 105AH
TECHNOLOGY Lead Acid Lead Acid Lead Acid Gel Lithium RATED CAPACITY 105AH 105AH 100AH 105AH USABLE CAPACITY 50AH 50AH 50AH 95AH BATTERIES REQUIRED 2 2 2 1 CYCLES @ 80% 150 185 350 2500
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- Insufficient recharge
– A battery in normal conditions needs to be re charged in strict accordance with a specific charge algorithm dependant on the type of battery technology. Frequent Deep discharging of a battery requires specific recharge protocols. It is critically important that lead acid batteries be recharged FULLY within the shortest space of time. This would normally be approximately eight to twelve hours at a minimum charge of rate of at least ten percent of the capacity of the battery for an UNINTERRUPTED time period. (e.g. 100 ah battery – minimum charge current at 10% is 10 amps –minimum charge time 8 to 12 hours. This is of course dependant on how deeply the battery is discharged before charging commences)
– Under current Eskom Load Shedding conditions, if the battery bank is exposed to deep discharges, the battery bank will not be fully recharged when the next load shedding occurs, leading to a fast autonomy loss (2 to 5 days), due to insufficient recharge and plate crystallization (plate sulphation) which might damage the battery permanently.
– On the smaller plug and play inverter system, we recommend that you ensure that your inverter is set on twenty amps for recharging and not ten amps to assist in recovering the battery.
– We also recommend that your inverter batteries be charged and or reconditioned should you have a situation where you do not have power for extended periods – this may be supplemented with solar panel input where applicable and or bigger capacity intelligent battery chargers.
– Leaving batteries flat without re- charging timeously is extremely detrimental to their lifespan. Please remember that Lead acid batteries are not like your cell phone Li ion battery whereby these can stand partially charged and still recover fully. Lead acid batteries need to be recharged fully in the quickest time possible. There is also the fallacy that batteries need to be “used “– a battery’s life is extended by being conservative with their use. That is, a battery discharged at 10 % and then recharged again when compared with a battery that is discharged by 50% then re – charged will have a significantly longer life span.
– if your inverter has a solar input capability, then it is strongly recommended that one makes use of this to assist in recovering lead acid batteries, in particular, areas where there is multiple load shedding daily
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3. Deep discharges when semi sealed flooded & VRLA lead acid batteries under Eskom load shedding are exposed to 4 hours or more daily, to very deep discharges as well infrequent and quite often “partial state of charge “ conditions where batteries are frequently not charged fully or worse – never recharged fully, this can lead to premature capacity/runtime loss and/or premature failure of the battery.
4. Temperature Battery life will be reduced when the battery is used in elevated temperature environments. All runtime calculations are conducted at an ambient temperature range twenty (20) – twenty-five (25) degrees Celsius. For every four ampere hours of charge applied to a battery per degree above ambient temperature, the float charging voltage should be retarded by thirty-three millivolts. Batteries should therefore ideally be used in an ambient temperature environment of 20 – 25 degrees Celsius.
NOTE:
- As a consequence, of the current situation stated above, early replacement of batteries can be expected.
- This is not a design fault of the batteries or a manufacturing defect.
- This is directly related to adverse application criteria
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- Warranty Terms & Conditions
- The SMF (sealed maintenance free) flooded lead acid Battery warranty is against manufacturing and material defects for 12 months from date of purchase.
- The VRLA (valve regulated lead acid) GEL lead acid Battery warranty is against manufacturing and material defects for 24 months from date of purchase.
- The warranty does not cover loss of capacity due to over cycling and/or undercharging.
- The warranty covers the repair or replacement of the defective battery with an equivalent new battery.
- This warranty does not in any way cover personal loss or damage or any subsequent loss as a result of hidden defects.
- Before validating the warranty, we will recharge and evaluate the battery according to standard operating procedures.
- Should there be any doubt as to the validity of a claim, then a full teardown analysis will be conducted on the battery and the outcome will be communicated to the customer and a full report will be completed for each claim if necessary.
- There will be no claim if the original purchase documents are not produced.
- As a formal process of evaluation is conducted when assessing the health of one’s battery, one can assume that the findings by the supplier and/ or its’s representatives are accurate and represent the true state of the battery. Consequently, therefore the final results of the supplier and its representatives are final and binding.