![]() ![]() In fact, many customers will maintain a lead acid battery in storage with a trickle charger to continuously keep the battery at 100% so that the battery life does not decrease due to storage. This is because the self-discharge rate of an SLA battery is 5 times or greater than that of a lithium battery. Lithium should not be stored at 100% State of Charge (SOC), whereas SLA needs to be stored at 100%. For standby use, weight is an important consideration in remote applications (solar fields) and where installation is difficult (up high in emergency lighting systems, for example).Ī comparision of lithium and lead acid battery weights SLA VS LITHIUM BATTERY STORAGE ![]() In cycling applications, this is especially important when the battery is being installed in a mobile application ( batteries for motorcycles, scooters or electric vehicles), or where weight may impact the performance (like in robotics). Lithium, on average, is 55% lighter than SLA. It can be installed on its side, upside down, or standing up with no issues. This means there is no restriction in the installation orientation of a lithium battery. In a lithium battery design, the cells are all individually sealed and cannot leak. While an SLA is designed to not leak, the vents allow for some residual release of the gasses. If you have ever tried to install a lead acid battery, you know how important it is to not install it in an invert position to prevent any potential issues with venting. If the battery has had a chance to cool down, it may not accept a charge if the temperature is below 32☏. If the battery has just finished discharging, the battery will have generated enough heat to accept a charge. One thing to consider in cold temperature is the state of the lithium battery when you want to charge it. At 0☏, lithium is discharged at 70% of its rated capacity, Not have to be over designed for cold temperatures, but charging could be a However, an SLA can accept low current charges at a low temperature.Ĭonversely, a lithium battery has a higher dischargeĬapacity at cold temperatures than SLA. A lithium battery will not accept a charge at a low temperature (below 32° F). Knowing this, there are two things to consider when evaluating a battery for cold temperature use: charging and discharging. Lithium will outperform lead under most conditions but is especially strong at elevated temperatures.Ĭycle life vs various temperatures for LiFePO4 batteries COLD TEMPERATURE BATTERY PERFORMANCEĬold temperatures can cause significant capacity reduction for all battery chemistries. In fact, lithium at 55☌ still has twice the cycle life as SLA does at room temperature. Lithium’s performance is far superior than SLA in high temperature applications. For more information on how to charge a lithium battery, please view our Lithium Charging Guide. As a bonus, there is no need to keep lithium on a float charge for storage. ![]() They also recover quickly after an event (like in a backup or standby application). The faster charging means there is more time the battery is in use, and therefore requires less batteries. With lithium batteries, charging is four times faster than SLA. In standby applications, an SLA battery must be kept on a float charge. In most cyclic applications, you need to have extra SLA batteries available so you can still use your application while the other battery is charging. CHARGING TIMES OF LITHIUM AND SLAĬharging SLA batteries is notoriously slow. Instead of waning, the bulb would just not turn on at all if the battery were dead. If this were a lithium battery, the bulb would be just as bright from the beginning of its life to the end. It is giving off a little power, but not enough to fully illuminate the bulb. So, let’s put this in a real-life example.įlashlight and noticed it’s dimmer than the last time you turned it on? This isīecause the battery inside the flashlight is dying, but not yet completely dead. The current demand will be constant and thus the power delivered, power times current, will be constant. Power is a function of voltage times current. Here we see the constant power advantage of lithium against lead acidĪ lithium battery as shown in the orange has a constant voltage as it discharges throughout the entire discharge. ![]()
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