![]() ![]() If you commute, buy a second charger and charge both at work and at home. This is why SLA batteries need to be charged up immediately when you are finished with a ride. Each time you do that, a little bit of its capacity is lost. The second reason I never recommend SLA is that if you leave it discharged (even at 50%, like a careful consumer), then the un-coupled sulfides from the sulfuric acid will slowly begin to crystallize. So the big and heavy 10-Ah SLA pack is only useful for 5-Ah of range! If you run a SLA battery down to only having 10% left in it (its State Of Charge, SOC) on a regular basis, its life will be measured in weeks instead of months. SLA is kind of odd in that, in order to get the maximum life from them (short as it is), you should only use the top half of its range. The previous battery was ten Amp-hours (10-Ah) in size, but…that’s not the whole story. The blue LiFePO4 pack shown has 4 cells in series (4S), and is becoming a common replacement for 12V SLA (4 X 3.2V = 12.8V). Not only is a lithium battery smaller and lighter than a SLA battery of the same number of Watt-Hours (WH), the lithium pack will last MUCH longer. Maybe so, but my experience and research has shown me that the extra cost of a factory E-bike (over adding a E-kit to a bicycle) is usually paid by a customer who doesn’t have the experience or desire to mess with wrenches and soldering irons. Some have stated that even if the battery does wear out in only three to six months, they will have saved up enough money by then to buy an upgraded battery. SLA remains the battery chemistry with the cheapest purchase price, and as a result…they are still frequently chosen by consumers who are new to E-bikes. So…what’s the problem with SLA? They are bulky and heavy for the amount of Watt-Hours (WH) that they supply, but the worst part…is how fast SLA wears out. The voltage is still around 24V, so this is still no hot rod. The previous price was $449, and the new price with a lithium pack is $749, a difference of $300. The reason that this is news is because…this “mild assist” E-bike has upgraded their battery from Sealed Lead Acid (SLA) to lithium. Without the electrical kit, this bike is typical for the $99 bicycles found in the “big box” stores that most shoppers are familiar with when they need to buy laundry detergent and new socks for the kids. Just to be clear, they didn’t suddenly improve the quality of an “entry level” E-bike…the bicycle part of this model is still the same as it was before (steel frame, no disc brakes, etc). If you don’t mind paying a little more for the 15Ah version you will receive a higher capacity battery, which can offer you a longer runtime.The eZip Trailz has been a perennial survivor at the bottom of the lists of factory E-bike models for sale to the public for years, due to their low price. In summary it is all a matter of your preference. Keep in mind that in most cases as the Ah rating goes up so does the size of the battery! ![]() As long as the battery you want to replace has the same voltage and dimensions it is okay to substitute it with a different Ah replacement. Amp-Hours basically show how much energy a battery holds. Check the data sheet to make sure they will fit your case. Please note that some 15Ah batteries are slightly taller. As the dimensions of the 12 Volt 12Ah battery and the 12 Volt 15Ah battery are the same, they are interchangeable. ![]() Simply put both versions will fit in your application and will work fine. ![]() What is the difference between the 12Ah battery and the 15Ah battery? Why would I upgrade? EVX12120 - 12V 12Ah - High Cycle - Terminal F2 - Click here to view.UB12150 - 12V 15Ah - Terminal F2 - Click here to view.EVH12150 - 12 Volt 15Ah - Extended Run - High Cycle - Terminal F2.Would you like to upgrade to a higher capacity battery which can offer a longer runtime: HR1251WF2FR - 12 Volt 13.5Ah - 51 Watts Per Cell - Terminal F2.UPS - Uninterruptible Power Supply - Battery upgrade options: BW12120 - 12V 12Ah - Terminal Nut & Bolt - Click here to view.Look for the same battery with different terminals? Upgrade to a 12V 14Ah in the same size? Click here to view. You must use your existing wire and cables. Total Height with Terminals: 4.06 inches - Weight 8.16 lbs.DOT 60 classified for easy transportation. Reliable power for critical applications. Exceptional leak resistance even in an upside-down position. Excellent resistance to vibration, shock, chemicals and heat. Our maintenance-free sealed lead acid batteries with absorbed glass mat technology offer outstanding performance withstanding high current output and deep cycling. ![]()
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