Latest Battery Prices

We aim to provide premium quality, long lasting, custom built smart ebike batterys.

We provide, as far as we know, genuine facts and figures, along with free technical support.

Each battery is made from genuine grade A Samsung high capacity 21700 cells.

We only use 100% 10mm 0.2mm pure nickel strips for interconnecting the cells.

We use space saving hexagonal cell holders to reduce the size of the batteries.

Each battery has via the BMS

Battery Nominal voltages can be configured to

25.9V = 7S, 33.3V = 9S, 48.1V = 13S, 51.8V = 14S, 74.0V. = 20S

Battery Capacities can be configured to

4P = 19.6Ah, 5P = 24.5Ah, 6P = 29.4Ah, 7P = 34.3Ah, 8P = 39.2Ah

As an example a 13S7P battery would be 48.1V Nominal and have a max capacity of 34.3Ah.

The fully charged and fully discharged voltage of each battery can be custom programmed.

For 25.9V batterys (24V)

We reccomend charging to 28.7V (4.1V x 7), rather than 29.4V (4.2V x 7). We also reccomend discharging to 21.7V (3.1V x 7), rather than 17.5V (2.5V x 7), by doing this the BMS protects your speed controller before it hits its limit.

Setting the max charge voltage at 28.7V will slightly reduce the top speed of your ebike, and very slightly reduce the capacity but will vastly improve your battery longevity.

Setting the max discharge voltage at 21.7V will reduce the capacity of your battery, but will vastly improve your battery longevity.

For 37V batterys (36V)

We reccomend charging to 41.0V (4.1V x 10), rather than 42.0V (4.2V x 10). We also reccomend discharging to 31.0V (3.1V x 10), rather than 25V (2.5V x 10), by doing this the BMS protects your speed controller before it hits its limit.

Setting the max charge voltage at 41.0V will slightly reduce the top speed of your ebike, and very slightly reduce the capacity but will vastly improve your battery longevity.

Setting the max discharge voltage at 31.0V will reduce the capacity of your battery, but will vastly improve your battery longevity.

For 48.1V batterys (48V)

We reccomend charging to 53.3V (4.1V x 13), rather than 54.6V (4.2V x 13). We also reccomend discharging to 40.3V (3.1V x 13), rather than 32.5V (2.5V x 13). Most 48v KT style speed comtrollers have a cut off of 40V+-0.5V., so by doing this the BMS protects your speed controller before it hits its limit.

Setting the max charge voltage at 53.3V will slightly reduce the top speed of your ebike, and very slightly reduce the capacity but will vastly improve your battery longevity.

Setting the max discharge voltage at 40.3V will reduce the capacity of your battery, but will vastly improve your battery longevity.

For 74.0V batterys (72V)

We reccomend charging to 82V (4.1V x 20), rather than 84.0V (4.2V x 20). We also reccomend discharging to 62.0V (3.1V x 20), rather than 50.0V (2.5V x 20).

Setting the max charge voltage at 82.0V will slightly reduce the top speed of your ebike, and very slightly reduce the capacity but will vastly improve your battery longevity.

Setting the max discharge voltage at 62.0V will reduce the capacity of your battery, but will vastly improve your battery longevity.

Using these voltages you can increase the longevity of your battery by a few years.

Custom BMS settings can be arranged pre sale.

Our recommended wattage is calculated by multiplying the nominal voltage by the constant current, For example for a Samsung 50E battery pack (13S5P), 48.1V x 49.0A = 2356W.

*Prices fluctuate due to cell prices and availbility, and are estimates only

*Prices for other battery configurations on request

*Constant and peak current of battery are limited by the BMS settings, we dont push the cells too their max !

*We use 60A bluetooth BMS modules, so maximum pack current is 60A constant

*Battery max capacity is calculated by charging the cells to 4.2V, and down to 2.5V fully discharged.

*Usable capacity is calculated the charging cells to 4.1V fully charged to 3.1V fully discharged.

Battery chargers are designed to charge each cell to 4.2v (or max voltage the BMS is set to).

To charge a 25.9V (24V) nominal battery (7S x 3.7V) , you need a 29.4V charger (7 x 4.2V).

To charge a 37.0V (36V) nominal battery (10S x 3.7V) , you need a 42.0V charger (10 x 4.2V).

To charge a 48.1V (48V) nominal battery (13S x 3.7V) , you need a 54.6V charger (13 x 4.2V).

To charge a 74.0V (72V) nominal battery (20S x 3.7V) , you need a 84.0V charger (20 x 4.2V).

Charging

Samsung 50E standard charge rate per cell is 2.45A per cell, a 5P arrangement has a standard charge rate of 12.25A. Slower charging gives more capacity than standard rate charging, and slower charging extends the battery lifetime.

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