leagend
BC521

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12V Battery Charger with Battery Tester Inside

BC521

leagend BC521 is an advanced 8-step smart charger designed for 12V lead-acid batteries. It not only charges but also tests the CCA value and health status of the battery, along with assessing the cranking system and alternator system of the vehicle.
leagend BC521 features an one-key quick test and quick charging function, which can be activated using the Fn shortcut key.
Users can select the charging current (up to 5A, with options for 3A or 1A). Equipped with IP65 waterproofing, it’s safe for use in wet environments.

2-IN-1 8-STEP
SMART CHARGER AND TESTER

● 8-step smart charger, which can charge various 12V lead-acid batteries;

● Test the CCA value and health status of the 12V lead-acid battery;

● Test the cranking system and alternator system of the vehicle;

● The maximum charging current can be set to 5A/3A/1A;

shortcut key

The shortcut key “Fn”can be set to battery one-key quick test or one-key quick charging function;

Smart mode

● Smart unattended mode, which can stay connected for a long time;

● Provides battery repair mode;

● The output power is automatically reduced when the charger temperature is too high;

Built-in features

● Built-in protection of overvoltage, overcurrent, overheat and reverse connection

● Built-in high and low temperature automatic compensation mechanism, which can automatically handle special situations such as low temperature in winter and high temperature in summer

waterproof

With IP65 waterproof, the charger can be used in wet environment

SPECIFICATIONS

Input
100~240V-AC/50-60Hz
Charging Voltage
①:
14.4V, ②:
14.7V, ③:
15.8V, ④: Float 13.6V
Minimum Battery Voltage
2V
AC Input Current
1.25A rms (At maximum charging current)
Ripple
<4%
Working Temperature
-20℃~70℃ (-4℉~158℉)
Safety
overvoltage protection, overcurrent protection, overheat protection, reverse connection protection, anti-overcharge, anti-overdischarge
Charging Type
8-step, fully automatic charging cycle
Battery Type
All types of 12V lead-acid batteries (WET, MF, Ca/Ca, AGM and GEL)
Battery Capacity
1.2-160Ah
Protection Class
IP65
Temperature Compensation
Built-in charging voltage compensation according to ambient temperature
Maximum Charging Current
5A, 3A, 1A
Max Current of Unattended Mode
2.5A, 1.5A, 0.5A
Reverse Leakage Current
60mA/h

Inquiry & Sample Request

This product supportsleagend distributors/agents
and OEM,ODMcooperation

If you have an inquiry for us or need our quotation,please click the button to contact our sales experts,they will get back to you ASAP after they receive your inquiry or quotation e-mails.

If you need a sample, please click the button to buy it directly or contact our sales experts to ask for one.

*IMPORTANT NOTICE: if you place us an order after you purchase/get the sample, the sample fee will be deducted directly from your order amount.

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Faqs

What is your terms of packing?
Our standard packaging usually consists of a color box placed inside a brown outer carton.We also offer a customized packaging service.
What is your terms of payment?
100% T/T in advance or Deposit + Balance or /L/C or O/A
What is your terms of delivery?
EXW, FOB, CFR, CIF, DDU, DDP.
How about your delivery time?
Generally, it will take 3 to 20 working days after receiving your advance payment.The specific delivery time depends on the items and the quantity of the order.
Can you produce according to the samples?
Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
What is your sample policy?
We will provide the samples, and the customer needs to cover the cost of the samples and the courier fee.
Do you test all your goods before delivery?
Yes, we have 100% test before delivery.
How do you make our business long-term and good relationship?
1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect our customers and are fully willing to grow together with them to achieve a win-win situation.
What is the minimum order quantity (MOQ)? Do you support small-batch trial orders?
1.Our MOQ is 200, 500, or 1000 (Based on the various product types.)
2.Small-batch trial orders are supported.
Does the company support OEM/ODM customization? What is the specific process?
We support OEM/ ODM services.Specific customization process:
1. The customer provides the required drawings/detailed parameters.
2. The project is confirmed to be feasible.
3. A contract is signed with the customer and a deposit is paid.
4. Follow up on the customer's needs and make samples.
5. The customer tests and confirms the samples.
6. Mass production begins.
What international certifications has your product obtained? Can you provide the corresponding test reports?
Our core products have passed FCC, CE, RoHS and we can provide the corresponding test reports.
What is the product warranty period? How are quality issues handled?
1.The warranty period for standard products is 12 months
2.During the warranty period, we provide free repair and free firmware software updates.
What are the acceptance standards for bulk goods? What happens if the goods fail the acceptance inspection?
1.Acceptance criteria will be based on the samples confirmed by both parties. We will provide pre-production samples for confirmation during mass production.
2.If the defective rate exceeds the acceptable range based on the sampling inspection ratio, the factory shall re-produce the goods.
Do you support on-site or video factory inspections? Do I need to make an appointment in advance?
1.We support both on-site and video factory inspections by our clients.
2.On-site factory visits require an appointment 7 working days in advance. We will arrange a dedicated person to receive you and provide a full tour of the production workshop, quality inspection process, warehousing and logistics. Video factory visits can be booked at any time and support bilingual explanations in Chinese and English.
What customs clearance documents can I provide? How do I obtain a certificate of origin?
We can provide basic customs clearance documents such as commercial invoices, packing lists, bills of lading, customs declarations, and contracts free of charge; certificates of origin (CO/Form A/Form E, etc.) can be processed on behalf of customers according to their needs.
Does exchange rate fluctuation affect the quote? How long is the quote valid?
1.Our quotes are settled in US dollars, and the exchange rate is calculated based on the Bank of China's foreign exchange rate on the date of the quote. If the exchange rate fluctuates by more than ±3%, the two parties may negotiate to adjust the price.
2.Standard quotes are valid for 30 days, while quotes for customized products are valid for 15 days.