Product Details

Hangzhou factory,li-ion battery 48V20Ah for back up with CE, RoHS

Product Description

Back Up Battery Specification
Battery Model		BD-LF4820	BD-LF4830
Norminal capacity		20Ah	30Ah
Norminal voltage		51.2V	51.2V
Charge mode		CC(4.0A)CV(58.4V)	CC(6.0A)CV(58.4V)
Max charge current		20A	30A
Max charge voltage		58.4V	58.4V
Max discharge current		40A	60A
Discharge cut-off voltage		40V	40V
Working temperature	Charge	0~55°C	0~55°C
	Discharge	-20°C~60°C	-20°C·60°C
Cycle life		1,200 times	1,200 times
Dimension		88435320 mm	131435320 mm
Weight		15KG	23KG

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.

Application&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.