Hitek 12v 300Ah (Certified Remanufactured) LiFePo4 Lithium Battery Warranty Terms
1) The Seller warrants that your battery is free of defects in material and workmanship for the duration of the warranty. It does not cover damage due to abuse, neglect, misuse, fire, accident, collision, wear, explosion, freezing, theft, overcharging, alteration, improper installation, use of special additives, unauthorized attempt to repair, or failure to keep the battery properly maintained. Does not cover impact damage, drop damage, or moisture / water damage either.
The battery including cells and BMS inside, and the battery casing MAY have already been used or installed previously before and as such there may be some small marks or scrapes or imperfections on the exterior outside casing that do NOT affect the function or life of the battery. The capacity and function has been tested and the capacity has been found to be within 90% (or more) of the original Ah rating, and still be able to run for a long life if used at 80-85% DOD rating (recommended).
2) The Batteries must be installed in a dry location with the correct high current cabling (batteries are NOT IP rated so are NOT allowed to get wet, and are NOT allowed to be in direct sunshine onto the battery case itself). The average working discharge depth must NOT EXCEED a maximum of 80% of battery capacity (leaving a minimum of 20% capacity remaining in the batteries at all times). Batteries set for standby use must kept between 11.6 – 14.3V (per 12v battery module) and once a month a maintenance charge (top-up) of 13.9-14.3v (per 12v battery module) must be applied. Any time the battery voltage drops down below 11.8v the battery must be re-charged back to full within 4 days of reaching this low voltage. The Batteries must be charged by a correct multistage battery charger designed and configured correctly for this battery type (usually CC/CV - Constant Current then Constant Current Charging is most desirable for Lithium Battery charging), with the maximum voltage applied being 14.4v (at 25 degrees C ambient temp) at no more than the constant rated current (amperage) listed on the battery data sheet / battery label for that model battery. If a charging voltage higher than 14.4v per 12v module (at 25 degrees C ambient temp) or a charge / discharge amperage higher than the battery is specified and rated for has been applied to the battery the warranty is void.
The battery temperatures must be kept between 2 degrees C and 38 degrees C at all times under any / all circumstances, whether they are in use, connected, not connected or even just being stored. The batteries must NEVER be left sitting directly on any concrete floors, and if you do want to have them on a concrete floor then please place insulation between the batteries and the floor so that the batteries don't absorb the cold from the floor during colder winter periods. During daily running operation (including overnight) the batteries should be ran within their recommended temperature range of 5-36 degrees C, running temps outside of this can impact the responsiveness of the batteries, their efficiency / storage capacity available and affect how many years of life they will happily run for.
We recommend everyone running these batteries to keep an eye on the battery BMS data via the blueooth app which shows battery temperature (especially during mid summer + mid winter periods when the temps are at their hottest + coldest for the year and also shows charging + discharging amps + shows estimated SOC % (State of Charge).
The batteries must still be give a top up charge at least once every 4 months even if they are being stored and no power is being used or drained from them.
If you are going to be storing these batteries (un-used or disconnected) then please ensure the charge voltage is at least 13.5volts (terminal voltage) before you put the battery away into storage.
We require any Real Time / Active TEMPERATURE COMPENSATION be TURNED OFF / DISABLED when using / charging our LiFePo4 Lithium Batteries.
3) A battery monitor can be installed on the system that records charging and discharging rates, State of Charge and History for the batteries, however because battery data is available via the Bluetooth BMS then it is not compulsory you have an external monitor.
4) The warranty limited to the original purchaser and partners / agents for our batteries and is non-transferable if the batteries are re-sold to a second client (eg as second hand or prior used batteries).
5) Batteries must be returned to Hitek Systems Ltd for any warranty claim (with costs of return paid for by the client or partner). All warranty claims must be accompanied with the original invoice, receipt or order or a copy of + pictures of the exact setup they were running / installed in + values / records of temps & charging / discharging voltages + currents etc.
6) This Pro-rata Warranty provides repair or replacement within the first year and pro-rata credit on the product purchase price for failures beyond the first year towards repair or replacement. Hitek has the discretion to be able to offer another remanufactured battery if applicable if the existing battery cannot be repaired throughout the entire 2 year pro rata warranty period.
7) Warranty terms may be updated from time to time. By continuing to use our products you agree to be bound by any amendments made.
8) A user / customer must pay for any / all delivery costs (both ways) to get any batteries back to Hitek Systems / Hitek Solar NZ (and / or any 3rd party testing company specified by Hitek Systems) and pay for any testing costs in the event of any warranty claim being submitted, whether the batteries are found to in fact be under warranty or not. Hitek Systems will not re-reimburse any out of pocket or consequential or in-consequential losses relating to our batteries or any items we supply. Any warranty claim submitted must also be submitted with proof (including clear detailed pictures) that the battery charge + discharge voltages and showing how the battery / batteries were physically connected to any equipment (charging / discharging equipment including loads / inverters / chargers etc).
9) The warranty assumes that the battery is being charged back up regularly on an average daily basis, and is not left sitting for a month or more flat or with very low levels of charge. Extended periods of sitting empty or at a very low charge level will damage even the most robust deep cycle battery (likewise so will running it outside it's recommended temp range).
10) If you are unsure about anything listed here or what is needed in real world terms then it is your obligation to contact us to get further advise or clarification.
The Hitek 12v 300Ah Certified Remanufactured LiFePo4 Lithium Battery is rated at 1.56kWh Total Capacity @ C10 Rating (discharge over 10 hour discharge time period).
Usable Capacity: We have tested the battery at 285Ah and able to provide 255Ah Usable Capacity at 85% DOD for daily cycle use which gives 3.06kWh Usable capacity over 8-36 hour discharge period at 25 Degrees Celsius. Rated Capacity is +/- 6% Tolerance.
Battery Settings:
Nominal Voltage: 12.8v
Absorb Charge: 14.2v - 14.4v (14.3v Recommended)
Float Charge: 13.6-13.8v (13.7v Recommended)
Normal Daily Discharge Cut Voltage: 12.0v
Max Discharge Limit: 11.6v (don't ever discharge lower than this voltage).
Max Charge Current (peak): 90Amp (max 30 mins per hour - Heavy Duty cables needed)
Constant Charge Current Support: 6-80Amp (for hours on end)
Max 15min Discharge Current: 200Amp (max 15 mins per hour)
Max 5sec Discharge Current: 245Amp (max 15 seconds)
Normal Constant Discharge Current Support: 1-100Amp constant.
Terminal Hardware Torque: 8-9 Nm (Newton meters of Torque) /
Terminal Hardware Torque: 5.9-6.6 Ft Lb (Foot Pounds of Torque)
Temp Operation Min: 2 Degrees C (4 degrees C min recommended).
Temp Operation Very Max: 41 Degrees C (for max 3 hours in a 1 week period).
Temp Operation Recommended: 5-36 Degrees C, 15-25 Degrees C is optimum.
Max Rated Design Life: 8 Years (if ran at perfect ideal conditions).
Keep in mind the battery is a Remanufactured battery so will have some calendar aging already.
We reserve the right to look at your system setup and battery data before we accept any warranty claim to check whether the battery has been used within correct parameters or not before any warranty claim may be approved.
Note: We allow an 85% DOD (Depth of discharge) to be used from the battery every single charge cycle and up to 2 full cycles per day without affecting the 2yr battery warranty.
Hitek LiFePo4 Battery Maintenance.
In order to assure service life, the batteries should be correctly inspected and maintained. The maintenance methods of batteries are recommended as follows:
6.1 Monthly Maintenance
— Keep the battery-room / installed location clean.
— Measure and record the ambient temperature of the battery-room / area.
— Check each battery’s cleanness; check damage and for overheating signs around the terminals, container and lid etc.
— Measure and record the total battery voltage, absorb current and floating current (or CC/CV values) of the battery charging system.
— Measure and record the minimum, average and maximum battery temperature and check to ensure you are meeting correct charging requirements at the battery temperature as ourlined.
— It is your responsibility to sort the environment to keep the average temp between 5-36 degrees C (measured at the battery terminal).
— If at any time the battery voltage is left at 12.0v (or lower) for 1 week or more then you need to give them a charge back to full, just so they're not left sitting empty for any major length of time.
— If at any time the battery voltage drops to 11.8v you must get them back to at least 13.8v within a 48 hour period of this.
6.2 Quarterly Maintenance
— Repeat monthly inspection.
— Measure and voltage of the battery set and if possible each battery module.
— Ensure that once a quarter (every 4 months) the batteries are held at 14.4v with a 1-2amp charge current for at least 2 hours to ensure the cells get fully rebalanced correctly internally.
— Check battery temp range (via bluetooth app) and ensure that the batteries have been running correctly within their recommended temp range, and if they are close to being outside the range make adjustments to the environment to resolve the install environment temp so that the batteries are running within their recommended temp range.
6.3 Yearly Maintenance
— Repeat quarterly maintenance and inspection.
— Check whether connectors are loose or not every year and tighten them
— Check whether connectors + terminals have any signs of oxidation or corrosion or build up on them that would be affecting the mating surfaces or electrical conductivity working correctly and clean these appropriately to ensure nice clean mating surfaces between the terminals and the lugs that are bolted on. Check for any signs of heat buildup or discoloration at the cables / terminals / connections and resolve anything found. Include the battery circuit breaker and it's connections in these same checks also.
6.4 Operation and Maintenance Precautions
Insufficient Charge / End Voltage Too low
Look through the battery charging / discharging details and ensure that the batteries are not left empty (close to their discharge limit voltage) on a regular basis, make any minor adjustments if necessary to correct this.
Over Charge
Look through the battery charging / discharging details and ensure that the batteries are not ever exceeding their Full Charge / Absorb Charge Voltage (their charge limit voltage) and make any minor adjustments if necessary to correct this.
Temperature Too low or too high
We have mentioned that too low temperature will affect the capacity of battery.
While too high temperature will decrease / shorten the available battery life and can cause accelerated degradation / capacity loss.
Long time storage after discharge
If the battery is put aside without charge for a long time after discharge, it will affect the capacity and life of the battery, it is always recommended to store the battery with at least 13.6volts at the terminals if you are going to be turning off the system and leaving the battery in storage for any length of time, and then give a top up charge at least once every 4 months.
Battery Warranty
It is important that you follow specified maintenance including a detail maintenance record. Failing to comply will void the battery manufacturers warranty. Any warranty claim will be on a pro-rata basis and is subject to all maintenance records first being inspected and verified along with constant and max charge amperage settings, voltage settings and max charge + max discharge amperage settings also being reviewed.
Hitek Systems will replace a battery if used within its parameters, if the available capacity falls to a level lower than 50% of rated capacity during a 15h (C15) discharge test under within 24 months of purchase, or if the capacity falls lower than 50% of its remanufactured listed capacity (listed in the invoice) in 15h (C15) or less than 45% of its original label rated capacity. If Max Charge / Discharge rates or battery temp range parameters are exceeded / neglected and / or you are running outside of these parameters or you have used incorrect sized cable + lugs to properly handle the current flowing in / out of the terminal and caused any physical battery terminal damage, then you have void your warranty through incorrect installation.
The guarantee will be null and void in the event the battery is installed incorrectly, misused, used or charged / discharged or used outside of our recommended specifications, damaged by external influences (like lightning, fire, current overloads, electrical shorts, power surges or water), altered, repaired (or attempts for repair were made) by others than Hitek Systems or, if and when, identification and / or data has been tampered with (including BMS changes) or removing / changing the labels on the battery case. Any customer end caused damage to the battery terminals or the battery case after the battery has been supplied (accidentally or intentionally) will also render the warranty void.
Please Note: ANY Original Warranty from the original battery manufacturer is VOID / EXPIRED whenever any battery is supplied as a Hitek Certified Remanufacturerd battery, so please do NOT ever contact the original manufacturer for any kind of support with the battery as ALL warranty and support for the Remanufactured battery comes directly through Hitek only for these batteries.
Hitek Systems shall not be liable for direct, indirect, incidental or consequential damages or losses arising out of the sale or relating to the use of this product, and the purchaser / buyer / user assumes all responsibility for all personal injury and property damage resulting from the handling, possession or use of the product. In no event shall the liability of Hitek Systems for any and all claims, including claims of breach of warranty or negligence, exceed the purchase price of the product.
End Of Life / Outside Of Warranty Period:
Once a battery has reached the end of its life or has developed some sort of fault or issue and is outside it's warranty period, please contact Hitek to arrange correct recycling of the battery thanks.
THE ABOVE WARRANTY IS IN LIEU OF ALL OTHER REMEDIES, INCLUDING BUT NOT LIMITED TO ACTIONS FOR BREACH OF CONTRACT OR NEGLIGENCE. ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE HEREBY EXCLUDED.
By making sure to follow and stick to our recommendation this will ensure that you get a nice and long service life from the batteries that we supply you. Failure to adhere to this advice and use the correct settings will not only void your warranty but can and often will dramatically shorten the usable life of your batteries. If you are unsure of anything regarding your batteries such as max charge, or discharge voltages or temp range etc, it is solely your responsibility to phone up or email Hitek Systems to have the correct info supplied to you, ignorance for not knowing is not an excuse sorry.
Note: All references in above terms are for both Hitek Solar NZ and Hitek Systems Ltd entities, thanks.