Product Details

Hangzhou factory, High power li po battery for electric bicycle, 36V 20Ah assembly via 3.7v li polymer battery

Product Description

1. Basic Characteristics
Product Name			Electric bicycle li po battery pack
Cell Type			Li-polymer/Li-ion
Cell Material			Li(NiCoMn)O2
Dimension (TWL)			38015070mm
Weight			5±0.2Kg
Working Temperature		Charge Temperature	0-45°C
		Discharge Temperature	-10-65°C
Retention of Charge (Store in One Month)			≥90%
2. Technical Data
Nominal Voltage&Capacity			36V20Ah
Charge	Way of Charge		CC/CV
	Standard Charge Current		2A
	Max Charge Current		5A
	Max Charge Voltage		42V
	Cell Over Charge Protection Voltage		4.25V±0.025
Discharge	Standard Discharge Current		10-15A
	Max Discharge Current		25A
	Cell Over Discharge Protection Voltage		2.8V±0.025
Ratio Discharge	1C		>96%C
	2C		>90%C
Cycle Life			≥800 Cycles
3. Safety Test
Short Circuit Safety Test			No fire, no explosion
Over Charge Safety Test
Crush Safety Test
Needing Safety Test
Extrusion Safety Test
130°C High Temperature Safety Test

BMS Specification

Items	Symbol	Details	Standard
Over charge protection	V_DET1	Over charge detection voltage	4.25±0.025V
Over discharge protection	V_DET2	Over discharge detection voltage	2.8±0.025V
Over discharge protection	I_DP	Current under over current protection	50±10A
Resistance	R_D3	Resistance in main circuit	R≤50mΩ
Consumption current	I_DD	Internal circuit consumption when working	10μA Type 100μA Max

Battery Charger

Packaging& Shipping

Shipping

1. Samples are always available and normally take 5-10 days ready to ship. Quantity goods usually get ready to ship in15 days after deposit received or as per order quantity.

2. We offer varies shipping ways, including via express such as TNT/UPS/FEDEX/DHL, airline as well as by sea based on customer requirements.

Shipping Port: Default port Shanghai or Shenzhen Port, China

Payment Terms

1. We accept L/C, T/T, PAYPAL, Western Union, Cash and so on.

2. 100% TT in advance for samples. For large quantities, 30% TT in advance as soon as order confirmed and the balance before shipping via TT or L/C etc.
3. If you prefer other payment terms, please contact us freely.

Cautions

Charge

1.Charging current should be no higher than the max charging current in spec.

2. Charging voltage should be no higher than standard voltage in spec. Max charging voltage is 42V, the charger should be designed under this rule.

Higher charging current or voltage would probably cause battery heating, leakage, charge&discharge problems, mechanical failures, or safety issues.

3.Charging temperature : 0℃~45℃

4. Do not short-circuit the positive and negative terminals of the battery with metallic objects. Connect the battery’s positive and negative rightly, otherwise, it will cause safety problems.

Discharge

1. Discharging currentshould be no higher than the max current in spec, otherwise it will cause sharp reduction of battery capacity and over heating.

2. Discharging temperature: -10℃~60℃

3. Over-discharging

Please kindly notice the battery would be in an over-discharging status due to its self-discharge features if it is not used for a long term. Please charge the battery regularly and keep its voltage above 36V to prevent over-discharging.

4. Storage

It is highly recommended to charge/discharge the battery every two months during long time storage. Charge the battery 24 hours continuously if the battery is placed over one month, and keep it with >60% SOC.

Items	Storage temperature	Relative humidity
Short term storage( ≤three months)	0~35℃	30~75%
Long term storage(> three months)	20±5℃	35-70%

Honors& Certifications

Our Services

Replacement Policy

1. We guarantee two years warranty of our battery products.
2. In case of any product defective, please notify us within 3 working days after receiving goods.
3. Any items must be returned in their original condition to qualify for a replacement.
4. The buyer is responsible for related shipping cost replacement incurred.

Advantages

1. Prompt response for your inquires and timely order process after payment is verified

2. OEM product is available. Customer’s logo or typical design could be shown in battery products based on mutual discussion.

3. Professional engineer team and strong technical ability , which always provides our clients with excellent ideas and perfect solutions.

4. As an experienced battery factory over years, we are able to offer customers high quality and favorable prices.

For more detailed information, please just click and send inquiry .