84.2v Rapid-charger for Gotway, KS18L/XL, Glide3/V8

$125$150

  • These are the 84.2v chargers for Gotway, Inmotion V10/v10F, Solowheel Glide 3 & the King Song 18L/XL Electric Unicycles
  • Please refer to the charger connector picture to determine which charger is appropriate for your device
  • Packaged full of features: LCD display, variable current, battery extending partial charging setting, dual-input voltage, reset switch
  • Existing eWheels customers, please provide your previous order number to have your shipping costs refunded, for a total cost of $125 within the Continental US
Product price:
Additional options total:
Order total:
SKU: FC-84V Category:

Description

Electric Unicycle Charger Connectors Compared

Overview of Features

High Power Output: with up to 5 Amps of current, this charger has a maximum DC output of 421Watts, which is the equivalent energy consumption of cruising along at 20 MPH, or a 1:1 ratio of charge to ride time. In contrast the standard brick charger that comes with the Wheel, is just 120W watts—because the Solowheel Glide 3 has just 40 battery cells, this rapid charger’s limit is 3A.


Extend the Lifespan the Battery Pack by up to 400%:  if the battery pack is regularly charged to around 4.05v (or 80% nominal capacity), it will help to preserve the useful lifespan of a lithium-ion battery pack by up to four times the standard cycle rating. A typical modern cell is rated to retain 70% of the original capacity after around 500-700 discharge/recharge cycles. With a partial charging, this can well exceed 2000 cycles!


Partial Charging is also Safer: battery cells are extremely sensitive to the slightest amount of over-charging voltage beyond 4.2v. Because an Electric Unicycle uses regenerative braking for slowing the Wheel down, on a full battery, it’s possible to exceed the maximum voltage causing harm & premature degradation to the pack. Charging to 80-90% provides the battery with a capacity buffer to absorb the surplus energy of braking after a charge.


Variable Current: on the side of the charger is a Current selector, you can choose the output Amps, ranging from 1-5. For most 84.2v packs, these consist of 3 or more parallel circuits. At 5 amps, this current is divided over these three circuits, at 1.66A per cell, which is still below the battery manufacturers standard specification of 1.75-2A.

IMPORTANT!: Do not use this charger on other Electric Unicycles, which have the same connectors, if the charge rate is too high for a particular pack, it may severely degrade the longevity of the pack, and can pose a fire risk. Furthermore, the maximum rate of charge for all Electric Unicycles should not exceed 5A, this because the gauge of wiring that is used on the charging input wires is much less substantial than on the output.

Voltage/Current Display: both the voltage & current are shown on a large LCD display mounted on the top of the charger. This gives you an instant snapshot on the exact progress of the charging status. When the current starts to drop, it is an indication that Constant Current (CC) phase has completed & is now starting the Constant (CV)—this is where the battery is about 80% charged & where the charging cycle starts to ramp down. CC/CV mode is attained only at the 100% voltage selection, on the 80-90% setting, once the set voltage is reached, the charge cycle will terminate.


Source: http://www.fveaa.org/forums/index.php?topic=1302.0


Input voltage selector: if planning to take this charger to another country, Europe for instance with the 240v voltage, you can change this setting via the input selector.
WARNING: if you have the wrong input voltage selected, you will destroy the charger & void the warranty.


Reset button: once the selected charge % has been reached, the charger will automatically shut-off but remain in standby mode. When plugging the Wheel back in, simply press the reset/power button, to restart the charge cycle again.

Comparison of the Gen III & Gen IV Electric Unicycle Fast-chargers

Additional information

Weight 3 lbs
Dimensions 11 × 8 × 6 in
Type

Gotway 84v, King Song 18L/XL, Inmotion Glide 3/V8, Inmotion V10/V10F

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.