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K820 48V 1000W/ 36V 250W Motor 17.5AH Battery Fashionable Electric Bike Max Speed 30-50Km/h
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48V 18Ah（864Wh）Lithium Battery
The electric bike is equipped with a 48V 18Ah lithium battery to ensure long life and excellent performance. In pedal-assisted mode, the cruising range per charge can reach 100 km, and in pure electric mode, the cruising range is about 65 km.
48V 1000W Motor
The 48v 1000w high-speed brushless motor is light in weight. Its internal use of star gear design can amplify torque and improve energy efficiency conversation rate. This is reflected in reducing energy consumption and silent energy consumption while increasing cruising range, improving speed performance, and climbing performance. Fast power output.
Powerful:
High speed brushless motor, torque 75Nm, provides strong performance for electric bicycles.
High-performance battery:
Electric bicycles are equipped with replaceable 18Ah lithium batteries. In fully electric mode of the 18Ah battery, the range can reach 45-55 km.
Three riding modes:
The electric mountain bike has a pure electric mode, a Manpower Assisting mode and a pure Manpower riding mode.
Excellent quality: the electric bike features a 21 speed Shimano transmission system, sensitive mechanical disc brakes, an excellent aluminium alloy frame and a shock absorbing front fork.
Customer service: one year warranty. This electric city bike has already completed 90% of the assembly before shipping, so it is not difficult for you to do the rest yourself. Bicycles come with mudguards and rear pannier racks, you do not need to buy yourself. If you have any questions, please feel free to contact us. We will reply you at any time.
Brand Name
/
Model
K820
Frame
6061 Aluminum Alloy Frame
Fork
Aluminum Alloy Suspension Fork with Lockout
Motor
48V 1000W/ 36V 250W Brushless Rear Hub Motor
Max Speed
around 40km/h
Battery
48V 18Ah Lithium Battery
Range
Fully Electric Mode Range: around 50km
Pedal Assist Mode Range: around 80km
Mechanical Disc Brake with power cut-off feature
Gear
Shimano 21-Speed
Display
Smart LCD display that shows speed, battery status, pedal assist level, etc.
Throttle
Twist throttle on the right side of Handlebar
Headlight
LED Headlight powered by battery
Tire
26″x1.95″ inch Tire or 29″tyre version
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}()}
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return `
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}()}
${function() {
const pc_layout = 'single_column';
const isProductPage = '1' == 1;
const product_id = 'da8626a4-f7ec-453f-8e8d-dba9e69ff5f1';
const accent_color = '';
const randomStr = Math.random().toString(36).substring(7);
const item = data;
const config = data.config;
const formatDate = value => {
let date = new Date(value * 1000);
const day = date.toLocaleString('en-US', { day: '2-digit' });
const month = date.toLocaleString('en-US', { month: 'short' });
const year = date.toLocaleString('en-US', { year: 'numeric' });
return month + '/' + day + '/' + year;
};
return `
${formatDate(item.created_at)}
`;
}()}
${function() {
const randomStr = Math.random().toString(36).substring(7);
const list = data.listData;
const isPC = data.isPC;
const pc_layout = 'single_column';
return `
All(${list.count})
With Photos(${list.image_count})
`;
}()}
${function(){
const isPC = data.isPC;
const pc_layout = 'single_column';
return `
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`;
}()}
(function() {
const STATUS = {
LOADING: 'loading',
FINISH: 'finish'
};
const RESULT = {
EMPTY: 'data-empty'
};
class SPZCustomCartSku extends SPZ.BaseElement {
renderData = [];
/**
* add to cart reselect item, and delete process:
* 1. record reselect id before show reselect modal
* 2. add to cart success, mark `needDeleteReselectRecord` to true
* 3. close reselect modal / drawer
* 4. spz-cart re-render, triggered mounted event
* 5. call refresh
*/
// mark delete reselect id
recordReselectId = null;
// mark should delete reselect record after spz-cart mounted event
needDeleteReselectRecord = false;
refreshLock = false;
addToCartSuccess = false;
// cache paused refresh data
refreshDataCache = [];
// cache similar products data, for manual add to cart
similarData = [];
constructor(element) {
super(element);
this.xhr_ = SPZServices.xhrFor(this.win);
this.action_ = SPZServices.actionServiceForDoc(this.element);
}
setupAction_() {
this.registerAction('refresh', (invocation) => {
const data = invocation && invocation.args && invocation.args.data || {};
this.refresh(data);
});
this.registerAction('deleteReselect', SPZCore.Types.debounce(
this.win,
(invocation) => {
this.deleteReselect(invocation?.args?.id);
},
200
));
this.registerAction('deleteInvalid', SPZCore.Types.debounce(
this.win,
(invocation) => {
this.deleteInvalid(invocation?.args?.id);
},
200
));
this.registerAction('setReselectRecordId', (invocation) => {
this.setReselectRecordId(invocation?.args?.id);
});
this.registerAction('clearNeedReselectRecord', (invocation) => {
this.clearNeedReselectRecord();
});
this.registerAction('registerDeleteReselectTask', (invocation) => {
this.registerDeleteReselectTask(invocation?.args?.data);
});
this.registerAction('lockRefresh', (invocation) => {
this.lockRefresh();
});
this.registerAction('releaseRefreshLock', (invocation) => {
this.releaseRefreshLock();
});
this.registerAction('manualAddToCart', (invocation) => {
this.manualAddToCart(invocation?.args?.id);
});
this.registerAction('syncSimilarData', (invocation) => {
this.syncSimilarData(invocation?.args?.data);
});
// DEBUG
this.registerAction('log', (invocation) => {
const data = invocation && invocation.args && invocation.args.data || {};
console.log('log', invocation);
});
}
buildCallback() {
this.setupAction_();
}
isLayoutSupported(layout) {
return true;
}
/**
* 数据去重
* @param {Array} data
*/
uniq_(data) {
const result = [];
for(let i = 0; i < data.length; i++) {
if(!result.includes(data[i])) {
result.push(data[i]);
}
}
return result;
}
checkRefreshLock() {
if (this.refreshLock) {
return false;
}
return true;
}
setLoading(isLoading) {
SPZCore.Dom.toggleAttribute(this.element, STATUS.LOADING, isLoading);
SPZCore.Dom.toggleAttribute(this.element, STATUS.FINISH, !isLoading);
}
setDataResult(data) {
const isDataEmpty = !data.reselectSkus.length && !data.invalidSkus.length && !data.line_items.length;
SPZCore.Dom.toggleAttribute(this.element, RESULT.EMPTY, isDataEmpty);
}
// 存在多次请求顺序问题
async refresh(_data) {
// 接口失败时返回数据不为对象
if (!(typeof _data === 'object' && _data.line_items && _data.line_items.length > 0)) {
const newData = {
line_items: [],
reselectSkus: [],
invalidSkus: [],
displayInvalidSkus: []
};
this.trigger_('refreshError', newData);
this.setLoading(false);
return;
}
if (!this.checkRefreshLock()) {
this.setRefreshCache(_data);
return;
}
this.setLoading(true);
let data = _data;
if (this.needDeleteReselectRecord && this.recordReselectId) {
let hasError = false;
try {
data = await this.deleteReselectRecordBeforeRefresh(_data);
} catch (e) {
hasError = true;
console.error(e);
const newData = {
...data,
reselectSkus: [],
invalidSkus: [],
displayInvalidSkus: []
};
this.trigger_('refreshError', newData);
this.setLoading(false);
this.setDataResult(newData);
return;
}
this.needDeleteReselectRecord = false;
if (hasError) {
return;
}
}
// 获取失效商品
const invisibleItems = data.ineffectives;
// 获取失效商品内仅售罄商品的sku
const soldOutItems = invisibleItems.filter(item => item.reason === "line_item_sold_out");
// 通过失效 sku 获取 spu, 注意去重
const soldOutSpuIds = this.uniq_(soldOutItems.map(item => item.product_id));
const querySpuIds = soldOutSpuIds.map(spuId => `ids[]=${spuId}`).join('&');
if (!soldOutSpuIds.length) {
const newData = {
...data,
reselectSkus: [],
invalidSkus: [],
displayInvalidSkus: []
};
this.trigger_('refreshSuccess', newData);
this.renderData = newData;
this.setLoading(false);
this.setDataResult(newData);
return;
}
// 请求 spu 下其他 sku 库存
this.xhr_.fetchJson(`/api/product/list?limit=${soldOutSpuIds.length}&${querySpuIds}`)
.then(res => {
const reselectSkus = [];
const invalidSkus = [];
// spu 维度展示
const displayInvalidSkus = [];
res.data.list.forEach(product => {
// spu 匹配, 存在多 sku 情况
const soldOutSkus = soldOutItems.filter(item => item.product_id === product.id);
if (!soldOutSkus.length) {
return;
}
// 通过失效 sku 获取 spu 下其他 sku 库存, 存在其他可用库存时标记为 "Reselect" 按钮可用
//const allowReselect = product.variants
// .filter(variant => variant.option1 === soldOutProduct.variant.option1 && variant.option2 === soldOutProduct.variant.option2 && variant.option3 === soldOutProduct.variant.option3)
// .some(variant => variant.available);
// 查询售罄 sku 对应商品是否可加购, 标记为 Reselect 可用项
if (product.available) {
reselectSkus.push(...soldOutSkus);
// 若商品不可用(全部 sku 售罄), 归纳到失效商品列表
} else {
invalidSkus.push(...soldOutSkus);
// spu 维度, 仅添加一项 sku
displayInvalidSkus.push(soldOutSkus[0]);
}
});
const newData = {
...data,
reselectSkus,
invalidSkus,
displayInvalidSkus
};
this.trigger_('refreshSuccess', newData);
this.renderData = newData;
this.setLoading(false);
this.setDataResult(newData);
})
.catch(err => {
this.setLoading(false);
console.error(err);
this.trigger_('refreshError', data);
}).finally(() => {
});
}
async deleteReselect(id, ignoreEmit) {
if (!id) {
return;
}
const targetSku = this.renderData.reselectSkus.find(item => item.id === id);
try {
const res = await this.xhr_.fetchJson(`/api/cart/${targetSku.variant_id}`, {
method: 'DELETE',
body: {
id: targetSku.id,
product_id: targetSku.product_id,
variant_id: targetSku.variant_id,
}
});
const newData = {
...this.renderData,
reselectSkus: this.renderData.reselectSkus.filter(item => item.id !== id),
};
this.renderData = newData;
!ignoreEmit && this.trigger_('deleteSuccess', newData);
} catch (err) {
console.error(err);
!ignoreEmit && this.trigger_('deleteError', err);
}
}
deleteInvalid(id) {
if (!id) {
return;
}
const targetSku = this.renderData.invalidSkus.find(item => item.id === id);
this.xhr_.fetchJson(`/api/cart/${targetSku.variant_id}`, {
method: 'DELETE',
body: {
id: targetSku.id,
product_id: targetSku.product_id,
variant_id: targetSku.variant_id,
}
})
.then(res => {
const newData = {
...this.renderData,
invalidSkus: this.renderData.invalidSkus.filter(item => item.id !== id),
displayInvalidSkus: this.renderData.displayInvalidSkus.filter(item => item.id !== id),
};
this.trigger_('deleteSuccess', newData);
this.renderData = newData;
})
.catch(err => {
console.error(err);
this.trigger_('deleteError', err);
});
}
// record reselect sku id before show reselect modal
setReselectRecordId(id) {
if (!id) {
return;
}
this.recordReselectId = id;
}
async deleteReselectRecordBeforeRefresh(data) {
if (!this.recordReselectId) {
return;
}
await this.deleteReselect(this.recordReselectId, true);
return {
...data,
ineffectives: data.ineffectives.filter(item => item.id !== this.recordReselectId)
}
}
clearNeedReselectRecord() {
this.needDeleteReselectRecord = false;
}
registerDeleteReselectTask(productData) {
const targetSku = this.renderData.reselectSkus.find(item => item.id === this.recordReselectId);
if (targetSku?.variant_id && productData?.variant.id) {
if (targetSku.variant_id === productData?.variant.id) {
this.needDeleteReselectRecord = false;
return;
}
}
this.needDeleteReselectRecord = true;
}
// pause cart refresh(trigger by similar products)
lockRefresh() {
if (this.refreshLock) {
return;
}
this.refreshLock = true;
}
releaseRefreshLock() {
if (!this.refreshLock) {
return;
}
this.refreshLock = false;
this.refreshWithCache();
}
// direct add_to_cart(trigger by similar products)
async manualAddToCart(id) {
const target = this.similarData.find(item => item.id === id);
this.lockRefresh();
try {
const res = await this.xhr_.fetchJson(`/api/cart`, {
method: 'POST',
body: {
note: '',
product_id: target.id,
quantity: '1',
variant_id: target.variants[0].id,
refer_info: {
source: 'add_to_cart'
}
}
});
const newCartItems = res.data.items;
this.setRefreshCache(newCartItems, true);
} catch (err) {
console.error(err);
}
}
syncSimilarData(data) {
this.similarData = data.data;
}
setRefreshCache(data, patch) {
if (patch) {
this.refreshDataCache = {
...this.refreshDataCache,
line_items: [...this.refreshDataCache.line_items, ...data]
};
} else {
this.refreshDataCache = data;
}
}
refreshWithCache() {
this.refresh(this.refreshDataCache);
}
mountCallback() {
}
unmountCallback() {
}
/**
* trigger event
* @param {Object} data
*/
trigger_(name, data) {
const event = SPZUtils.Event.create(this.win, `spz-custom-cart-sku.${name}`, {
data,
});
this.action_.trigger(this.element, name, event);
}
}
SPZ.defineElement('spz-custom-cart-sku', SPZCustomCartSku);
}())
(function () {
class SPZCustomCartTrack extends SPZ.BaseElement {
constructor(element) {
super(element);
this.action_ = SPZServices.actionServiceForDoc(this.element);
}
isLayoutSupported(layout) {
return true;
}
buildCallback() {
this.setupAction_();
}
hash(val) {
const hashKey = Object.keys(val).sort((a, b) => a - b).reduce((acc, k) => {
acc += `{'${k}':'${val[k]}'}`;
return acc;
}, '');
return hashKey;
}
trackExtra(key, value) {
console.log('trackExtra...', key, value);
if (!window.sa) {
return;
}
const hashKey = this.hash(value);
let hasExtraInfo = false;
if (window.sa.eventInfo && window.sa.eventInfo[key] && window.sa.eventInfo[key].extra_properties) {
hasExtraInfo = window.sa.eventInfo[key].extra_properties.some(p => {
return hashKey === this.hash(p);
});
}
if (hasExtraInfo) {
return;
}
window.sa && window.sa.registerExtraInfo(key, value);
}
delExtraTrack(key, value) {
const hashKey = this.hash(value);
if (window.sa.eventInfo && window.sa.eventInfo[key] && window.sa.eventInfo[key].extra_properties) {
window.sa.eventInfo[key].extra_properties = window.sa.eventInfo[key].extra_properties.filter(p => hashKey !== this.hash(p));
}
}
track(key, value) {
console.log('tracking...', key, value);
window.sa && window.sa.track(key, value);
}
setupAction_() {
this.registerAction('registerReselectAtc', () => {
this.trackExtra('add_to_cart', {
function_name: 'Farida',
action_type: 'reselect'
});
});
this.registerAction('clearReselectAtc', () => {
this.delExtraTrack('add_to_cart', {
function_name: 'Farida',
action_type: 'reselect'
});
});
this.registerAction('registerSimilarAtc', () => {
this.trackExtra('add_to_cart', {
function_name: 'Farida',
action_type: 'similar_product'
});
});
this.registerAction('clearSimilarAtc', () => {
this.delExtraTrack('add_to_cart', {
function_name: 'Farida',
action_type: 'similar_product'
});
});
const clickParams = {
business_type: 'product_plugin',
event_name: 'function_click',
function_name: 'Farida',
plugin_name: 'Farida',
template_name: 'cart',
template_type: '13',
module: 'online_store',
module_type: 'online_store',
tab_name: '',
card_name: '',
event_developer: 'ccbken',
event_type: 'click',
};
this.registerAction('trackDelReselect', () => {
this.track('function_click', {
...clickParams,
event_info: JSON.stringify({
action_type: 'cart_delete',
element_type: 'sku'
})
});
});
this.registerAction('trackClickReselect', () => {
this.track('function_click', {
...clickParams,
event_info: JSON.stringify({
action_type: 'reselect',
element_type: 'sku'
})
});
});
this.registerAction('trackDelSimilar', () => {
this.track('function_click', {
...clickParams,
event_info: JSON.stringify({
action_type: 'cart_delete',
element_type: 'spu'
})
});
});
this.registerAction('trackClickSimilar', () => {
this.track('function_click', {
...clickParams,
event_info: JSON.stringify({
action_type: 'reselect',
element_type: 'spu'
})
});
});
this.registerAction('trackOpenSimilar', () => {
this.track('function_expose', {
...clickParams,
event_name: 'function_expose',
event_type: 'expose',
event_info: JSON.stringify({
popup_name: 'farida_product_popup'
})
});
});
}
}
SPZ.defineElement('spz-custom-cart-track', SPZCustomCartTrack);
}())
