Radenite 48V 6.8Ah Li-ion Battery (Panasonic NCR18650B Cells). The Radenite 48V 6.8Ah Li-ion battery has the highest commercially available capacity of any "13S 2P" 18650 battery. The battery's cells are those used by Tesla® in their Model S and Model X Electric Vehicles.The battery can deliver 650W continuous and incorporates a protection BMS with balanced charging and short-circuit protection. Spot welded pure nickel power connections are used throughout (not plated steel). A water ingress detector will alert to any potential water damage. The optional built-in LED or Back-Lit LCD State-of-Charge indicator lets you know when it's ready for a re-charge. For important SAFETY information see "Using your Lithium-ion Battery" below. Alongside the essential safety information, there are 5 additional considerations to understand. Before purchasing a battery, check you have the correct voltage and that the dimensions are suitable. If the battery is to be installed in existing equipment that also charges the battery, check that the equipment's charge circuit is operating correctly.
If it isn't, then it will simply drain the battery. Check also that the charge circuit is providing the correct voltage and current. For example, the Radenite 24V Li-ion batteries require a 25.2V supply to reach full charge. Charging at 24V will result in only 84% charge level. Radenite only uses new branded cells in its batteries.Like all batteries, the capacity you observe will depend substantially on how quickly you drain the battery. High currents and load (such as fast acceleration or consistant full throttle on an e-bike for example) will significantly reduce the available capacity via heat loss. Same is true of most stored-energy sources; constant acceleration and high speed in a petrol or diesel vehicle will result in poor mpg.
If, after purchasing your battery, you have no voltage at the load terminals, the most likely cause is the BMS switching off the supply voltage; either the voltage has fallen below lower cut-off or a short circuit was detected. Connecting the correct charger will reset the BMS and restore voltage. Where fitted, a BMS temperature sensor may have deativated the supply voltage.
Leave the battery to cool and it will reset. Like all batteries, while not in use Li-ion batteries will self-discharge at a rate of 3%-4% each month. The Battery Management System (BMS) also draws a very small drain current. If the battery is allowed to self-discharge below its lower cut-off voltage, there is a risk that the battery will permanently fail.You will need to check the unused battery once a month ensuring it's charged to half capacity (nominal voltage). Do not exceed the maximum drain and charge currents for the battery. Doing so can risk fire and/or irreparable damage to the battery. Female 3A 5.5/2.1mm Barrel. IMPORTANT: Using your Lithium-ion Battery. When using your rechargeable Radenite battery, it's important to understand the environmental and operating parameters within which the battery must be maintained to ensure safety and good performance. The power density of Lithium-ion batteries has revolutionised portable power applications, energy capture/storage and transportation. When used incorrectly however, rechargeable Li-ion cells and batteries are less "forgiving" than the NiMH, Ni-Cad and Lead Acid alternatives. Cells have a very narrow tolerance level for their charge and discharge currents. The cells must also be kept within a defined voltage range.
Radenite's batteries provide some protection against voltage and current anomalies, but much depends on how the battery is deployed to ensure safe use, extended life and optimum performance. Do not short-circuit the battery's terminals.
Do not disassemble the battery or remove (or disable) the Battery Management System. Do not exceed the battery's recommended charge and discharge currents.Do not charge the battery beyond its recommended maximum voltage. Do not leave the battery charging while it's unattended.
Do not expose the battery to liquids, dense gases/vapours, moisture or damp conditions. Do not use the battery where ambient temperatures exceed 60°C. Do not use the battery in children's toys.
Do not discard the battery as domestic waste. The following sections provide additional. Information on the safe use of your Li-ion and LiFePO4 batteries.
If you are unsure about the safe use of your Radenite battery, disconnect it from any charger and/or load equipment and contact Radenite. What to do if your li-ion battery overheats or catches fire. If a Li-ion battery overheats, hisses or bulges, then it's possible that one or more cells are in "thermal runaway".
If it's safe to do so, immediately move the battery away from any flammable materials and place it on a non-combustible surface. (Use oven gloves or tongs if available). If possible, place the battery outdoors to burn out. If a fire is uncontrollable, contact fire emergency services.
Disconnecting the battery from a charger may not stop thermal runaway. A small Li-ion fire can be handled like any other combustible fire.
Ideally, use a foam extinguisher, CO2, dry chemical, powdered graphite, copper powder or sodium carbonate to extinguish any fire. If no foam or powder based extinguisher is available, use water to extinguish a fire.(There is very little lithium metal in a lithium ion battery to cause a significant adverse reaction). Water also cools the adjacent area and prevents the fire from spreading.
Covering the battery with a fire blanket may help contain the combustion. How do I charge my battery? Adhering to the recommended Charge and Discharge (Load) currents is essential to avoid battery failure and fire risk. Note: Never leave a Li-ion battery charging unattended. Check the specifications of your battery and ensure that you do not exceed the load limits during discharge (usage).
The same applies to charging rates. Radenite batteries are marketed with matched chargers that will deliver current within safe limits and the correct final voltage to your battery.
For example, the Radenite 1500mAh 12V LiFePO4 battery should not be charged with a current higher than 1500mA. Common domestic "wall-wart" chargers will often be rated at 2A (2000mA). These should not be used. Moreover the voltage of a fully charged 12V LiFePO4 battery is 14.4V (3.6V x 4). A standard "12V charger" typically delivers 12.8V.
This may result in a battery charged to only 50% of its capacity. Do not attempt to charge the battery with a voltage higher than the battery's specification. Furthermore a 36V Li-ion battery requires a 42V supply to reach full capacity. A 36V charger will take your 36V battery to only 50% of its useful capacity. Never use a battery charger that exceeds the charge current specification of your battery.Never connect your battery to equipment that draws more current than the battery's discharge current specification. Radenite batteries are not waterproof and should not be exposed to liquids or damp environments. Ensure that the battery is deployed where the ambient temperature does not exceed 60°C. What if I have no voltage at the output terminals of my Radenite Li-ion battery? All Radenite Li-ion batteries are fitted with an electronic Battery Management System (BMS). One of the features of the BMS is "short circuit protection". If a short is detected on the battery terminals, the current is disconnected. In most cases, the battery will need to be connected to a suitable charger to reset and restore the current to the discharge (load) terminals. A similar situation arises when a cell in the battery becomes "over discharged" past its low-voltage cut-off threshold; at this point the power to terminals will disconnect. Cells will naturally recover some voltage after the load is removed and power to the terminals will be reactivated usually within a few minutes.
In fact a cell's voltage will usually recover within a few seconds but the BMS has a delay before auto-recovery to prevent continuous oscillation of power to the terminals. Whether a cell is able to recover a threshold voltage or not, it's important that the battery should now be recharged. If your battery has built-in thermal cut-out, then the battery temperature may have exceed operational limits.Restore the battery's temperature to within its specified operating range; recovery is automatic. Prolonging the life of your Radenite Li-ion battery. Aside from following the preceding essential safety advice and the required parameters related to charge and discharge currents, there are two. Contributions you can make to extending the operating life of your battery. Specifications assume a full discharge (100% Depth-of-Discharge or DoD) of a battery before recharging is performed.
This then yields a the number of re-charge operations that the battery can absorb before the performance degrades. In broad terms, after 800 re-charge operations, Radenite Li-ion batteries will be able to deliver 70% of their initial capacity. LiFePO4 batteries can endure regular 100% DoD before recharging.
This gives them a singular advantage over. Radenite LiFePO4 batteries are NOT a substitute for SLI batteries; they are incapable of delivering the cold cranking amps to start a car engine.
However, if you have control of the cut-off voltage, you can again extend the life of your battery substantially by charging it to a voltage slight lower than the maximum charge voltage. For example, instead of charging a 36V battery to its full 42V, a 41V charge cut-off will reduce the formation of a coating on the anode which will, over time, reduce the life of the battery by increasing its internal resistance. The accretion rate of this "Solid Electrolyte Interphase" increases with final charge voltage. The trade-off is slightly-reduced capacity. (Approximately 93% in the 41V example).I want to put my batteries into storage. Ensure the batteries are in a 50% charged state (An approximation may be used from the battery voltage: 3.2V per series cell for LiFePO4 and 3.6V per series cell for Li-ion). Then cover the terminal connections in electrical insulating tape and store in a dry environment between 10°C and 25°C.
Check each month if the battery is approaching lower voltage threshold (all cells discharge naturally over time) and charge if necessary to 50%. I need help choosing a battery. If you are replacing a lithium battery, then the specifications of the existing battery will help guide you to the right type of battery (eg Li-ion vs LiFePO4) and whether it will fit in the space you have allocated (form factor).But whether you are replacing or purchasing for the first time, ensure that you know the correct voltage of the battery you require, the maximum current that the battery will be expected to deliver and the capability of any new (or pre-existing) charger to ensure that battery charge currents are not exceeded. Battery Charge and Discharge Currents.
Again, unlike their lead-acid counterparts, lithium batteries are less tolerant of excessive currents. In particular, although LiFePO4 batteries will meet the voltage requirements for most lead-acid replacements 6V, 12V, 24V etc. , lead-acid batteries have an extremely low internal resistance and can deliver very high currents in comparison to most LiFePO4 equivalents.Therefore, while the capacity Amp Hours(Ah) or Watt Hours(Wh) and voltage of a LiFePO4 battery might seem a good match, it may not be able to deliver the current (or Cold Cranking Amps) required to start an engine. Lithium-ion batteries have more than twice the energy capacity of LiFePO4 batteries on like-for-like volume and weight comparisons. Many Li-ion batteries can deliver higher currents and can accept a higher charge current compared to LiFePO4. There are specialist LiFePO4 batteries that can accept and deliver higher currents (for example, those designed for starting car engines that require 100s of CCAs), but in the non-specialist category, Li-ion exceeds LiFePO4's capabilities.
However, LiFePO4 batteries have several unique advantages over Li-ion. The cell voltage is convenient for replacing existing LA or SLA batteries.They are generally less expensive than Li-ion batteries. They can generally be charged recycled more times than Li-ion or LA/SLA. Their performance is impacted less by deep charge recycling (ie fully discharging before recharging). They are more forgiving if used incorrectly i. Outside the specified current and voltage ranges. They do not suffer from inherent thermal runaway characteristics (fire risk) making them a substantially safer technology. The table below gives general guidance on voltages, capacities and thermal stability; energy density figures are given for Radenite's own cells. All Radenite Li-ion batteries are manufactured with Battery Management System protection to reduce the risk of "Thermal Runaway". Images courtesy Iconic, CY & upklyak. This item is in the category "Sporting Goods\Cycling\Bike Components & Parts\Electric Bike Components". The seller is "radenite" and is located in this country: GB. This item can be shipped to United Kingdom.