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TravelScoot The Deluxe TravelScoot weighs 35 lbs including the Li-Ion battery.

TravelScoot The Sealed Lead Acid (SLA) gel cell battery is the one that comes in our Standard version of both, the Heavy Duty and the Junior TravelScoot.

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  TravelScoot The Deluxe TravelScoot weighs 35 lbs including the Li-Ion battery.
TravelScoot The Sealed Lead Acid (SLA) gel cell battery is the one that comes in our Standard version of both, the Heavy Duty and the Junior TravelScoot.  



It is important to know that the decay process of any battery begins virtually immediately after it is manufactured and its life span depends greatly on proper treatment. Time and usage are the key factors.

A motor home RV will serve as an example (without getting too technical) to illustrate the different requirements for batteries.

A motor home has two different types of batteries: one is the starter battery for the vehicle’s engine and electrical system and the other is a so-called house battery for the RV’s utilities. The starter battery is capable of providing plenty of cranking power for a very short time and is recharged immediately once the engine is running. But this battery is not suitable for operating the RV’s utilities, would not last very long. In this case a so- called “deep cycle” battery is used; these batteries tolerate slow and deep discharge much better. This is also the type of battery used on mobility scooters.

Long inclines and/or off-road conditions would discharge any light-duty battery much too quickly. This is not only inconvenient, but also extremely detrimental to the life span of the battery. If you think you will encounter primarily these kinds of driving conditions, a light scooter is probably not the best choice for you.

Most mobility scooters run on 24 Volts and use Sealed Lead Acid (SLA) batteries, usually consisting of two 12 Volt batteries wired in series. The advantage is that these batteries are fairly inexpensive and that they are readily available worldwide in standard sizes. The downside, however, is that the weight/energy density (power-to-weight) ratio is rather low; simply put, they are darn heavy and their life span is only a fraction of that of high-performance batteries.

Battery voltage: If you check the charge status on a 24 V battery with a voltmeter and your reading is 24 Volts, the actual charge is fairly low. A fully charged new SLA battery reads ~ 27 V immediately after the charger is disconnected, and drops to ~ 26 V after a short while without any usage. A reading of 23 V means the battery is completely discharged in terms of usable voltage and recharging is required as soon as possible. Storage at that low voltage will seriously damage the internal chemistry. A reading of no volts (0) means that the battery is dead. This shows that only the top 3 Volts of a fully charged SLA battery are usable. The best way to ensure maximum life-span of an SLA battery is to consume less than these 3 Volts before recharging.

For weight reasons, most light duty scooters use a 24 Volt, 12Ah (Ampere hour) SLA battery pack, which weighs about 20 lbs. Even though a lower-capacity (ampere-hour or Ah) SLA battery would decrease weight, anything less than 12Ah on an SLA is not advised because of the significantly reduced range; more capacity adds unwanted weight.

Fortunately, in recent years battery technology has made significant progress, and a variety of state-of-the-art high-performance and lighter-weight batteries have been introduced. Not all are suitable for electric vehicles, but some are very promising. However, these batteries come with a healthy price tag (Rule of thumb: the lighter they are in terms of energy density, the higher the price). In the end, however, they are well worth their money, especially for the frequent user. They last multiple times longer than SLA batteries and the very significant weight reduction makes them a real blessing to handle.

These high-performance batteries are not readily available in battery stores. They are usually assembled from smaller cells and wired in parallel and/or in series according to the vehicle manufacturer’s requirements for voltage, size, shape, connectors, etc. TravelScoot uses battery cells from Sanyo, a leading battery manufacturer for its Li-Ion batteries.

NIMH (Nickel-Metal Hydride)These batteries have about double the energy density of an SLA battery. In other words, with only half of the weight of the SLA battery, the driving distance is the same or better. This is due to the higher number of usable volts. A fully charged NiMH battery reads ~ 28 V, drops to ~ 27 V after a period of time, and can be discharged down to 22V. Immediate recharging is not required, but a voltage drop and storage below that value will shorten the battery life.

After about 300 charge/discharge cycles and proper treatment, the battery will still have approximately 60% capacity remaining, while an SLA battery will probably have been replaced a few times. Another important benefit of the NiMH battery is that it’s environmentally friendly to recycle (it contains no poisonous lead or cadmium). Unfortunately the nickel price on the world market has increased by more than 300% since Jan. 2006, which has serious consequences for the price of this battery type.

Li-Ion (Lithium-Ion). This battery represents the latest development in battery technology available for e-bicycles and e-scooters and has an amazing three times the energy density of the NiMH (or more than 6 times that of the SLA ). The 9.6 Ah Li-Ion battery weighs only 4 ½ pounds, but has 40% more range of the 12Ah SLA. Thus, it’s an exciting power source for light-duty scooters. Actually, since it is not recommended to fully discharge SLA and NiMH batteries, whereas the 4 ½ pound Li-Ion can be used to its full capacity, it essentially delivers the same range as the 13 pound NiMH, or 2 SLAs with a whopping combined weight of 40 pounds.

The usable voltage is an amazing 10 V (from 29 down to 19 Volts) The Li-ion battery comes equipped with a (required) a built-in PCB, which controls charging and discharging and prevents it from internal damage during those times as well as during storage. A manageable downside is that special care is mandatory. It MUST NOT be exposed to excessive heat, (i.e. inside a parked car for a prolonged period of time on hot and sunny days) because it could catch fire. Furthermore, dropping should be avoided, (but this is true for every battery, especially if your toes are in the way). It is advisable to store the battery in a padded bag (like a soft cooler bag) when not installed in the scooter.

This Li-Ion battery does not make much sense for use in most light duty mobility scooters available today. If such a scooter with a 12 Ah battery weighs about about 100 pounds, a weight reduction of 15 pounds is not significant and not worth the additional cost. A typical scooter user can’t lift 100 lbs., and he/she probably can’t lift 85 lbs. either.

For the TravelScoot however, this Li-Ion battery is an exciting addition because it further reduces the already unmatched weight of 50 lbs. to a mere 35 lbs. That is well under half the weight of its next closest competitor, and only one-third the weight of most other light duty mobility scooters. The battery weight is practically negligible with regard to loading and unloading; the fully assembled scooter can be transported in the vehicle, providing the storage area is large enough.

e-CFR 49 z175.10 2-2-11
DOT regulations for airline transportation prohibit Li-ion batteries with a lithium content of more than 25 gram see TravelScoot's single capacity Li-Ion battery contains 24 gram lithium and is approved for air travel.


Keep in mind that when using the TravelScoot, you will probably cover much more distance for the same purpose than you would do by walking. Therefore, as with every battery-operated item, the purchase of a second battrery pack is strongly recommended.
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