How to test the parasitic load of battery discharge

Repair instructions. Make sure to exclude any obvious influences, such as customer operations.

Customer driving habits, such as frequent short drives, will make:

Time to charge normally.

Confirm that the battery and charging system are working in normal order.

When the vehicle is parked, if the battery discharges for unknown reasons.

Sexual current consumption (e.g., module wake-up) or continuous current consumption (i

stuck).

Odor required for load testing: Parasitic current test switches (e.g. general-purpose.

For J38758 various types of the tool number is different, but the tool mechanism willing.

Never connect the negative lead of the charger to other electrical parasitic current test switches in the vehicle"on"Hekou"off

Words. When the test switch is in the ON position, the circuit closes and the current passes through the switch|

The shed test switch is in the closed position, the circuit is open and the current does not pass through the switch.

Table 3-7 Load test.

Test content Essentials.

Disconnect the battery negative cable from the battery negative terminal.

Install the male end of the parasitic current test switch J38758 to the battery tie termination.

Put the parasitic current test switch J38758 in the off position.

Install the negative cable of the battery to the female terminal of the parasitic current test switch J38758.

Place the parasitic current test switch J38758 in the open position.

Road test the vehicle and enable all accessories, including radio and air conditioning system. Up to need.

Parking. Set the ignition switch to the off position and remove the ignition key.

Connect a jumper wire with a 10A fuse to the test switch tool terminal.

Put the parasitic current test switch J3S758 in the off position. Current flows through the jumper wires.

Wait for lmiri. If the fuse blows, install an inductive ammeter to test the current value.

Place the test switch on and remove the jumper wire from the fuse.

Place the DMM in 10A gear.

Connect the digital multimeter to the test switch tool terminal

Put the parasitic current test switch J38758 in the off position. The current flows through the digital.

Wait for the LMITU to check and record the current reading.

When the current reading is 2A or less, put the parasitic current test switch J 38758 on (on.

Location. At this point, the current will pass through the switch.

When the parasitic current test switch J38758 is placed in the OFF position, turn it down to 2A for a more accurate reading.

Table 3-7 describes the load test steps

Special chop tips. 3 When the engine is running, never put the parasitic current test switch on off

to keep the charge on. Failure to do so will damage the vehicle's electrical system.

To remove the fuse, the test switch must be placed in the ON position.

System turn-on. This prevents accidental overloads (e.g. E3F true M fuse change).

equipment. There was a malfunction in the charging system, including a slippery drive belt and damage to the generator.

The battery is not properly maintained, including a loose battery clamping device or the battery.

The body (if used) is missing.

In general, the test steps for parasitic load current are as follows: Determine the audio anti-theft code (e.g., equipment). Disconnect the ignition switch and turn off all electrical appliances such as the car** and door light switches.

Verify that the lights under the bonnet, glove compartment lights, and baggage compartment lights are turned off. Remove the negative terminal of the battery and connect the digital multimeter (set the multimeter to a large range during the initial test, and gradually set it to the MA ADC). Read the parasitic load current in the sleep state, and pull the fuse sequentially to find the circuit with the discharge current, and take the multimeter reading at the same time.

When a bad circuit fuse is unplugged, the current reading drops, and it should be further searched and repaired. If the parasitic load current is between 20 and 30 mA, or the same as that of the equivalent normal model, it can be regarded as normal for the line and electrical components.

Is it vague to ask, the direction of the current flows from the positive electrode to the negative electrode. The magnitude of the current is measured with an ammeter.

Look at the power of the appliance. Or use a meter.

The discharge current of electric vehicles is 5A, what do you know?

Battery charging and discharging battery test: battery charging and discharging modes include constant current charging (CC), constant voltage charging (CV), constant current discharge (CC), constant resistance discharge (CR), hybrid charging and discharging and step charging and discharging in different modes, the charging process is divided into four stages: pre-charging, fast charging, supplementary charging, trickle charging, the discharge process generally does not continue to discharge at high current, generally using pulse discharge current, battery charging and discharging battery test is mainly for the voltage and current in various charging and discharging modes, resistance and temperature monitoring. You can refer to the NSAT-9000 battery automatic test system manual, which is very complete.

NSAT-9000 battery charge and discharge test system, the system supports multi-brand models of test instruments, and the flexibility is relatively high.

Knowing so much about it, it's good to have software.

The header is used to fill in the general items: battery model, test type (10 hours - 8 hours - 5 hours - 2 hours - 1 hour according to the project, high current, capacity percentage, capacity check discharge, load test discharge, annual detection discharge), ambient temperature, date, battery pack circuit number name, battery status before discharge, after floating charge, average voltage, estimated discharge load, power, current, and time. **Main content:

Battery number, discharge voltage at different stages (the first line is best used to fill in the pre-discharge voltage, and then the discharge voltage is written below.) If it is a multi-time record in the middle of the discharge, leave a few more lines, and leave a few lines if you are ready to remember a few times). Finally, fill in the fields of Inspector, Recorder and Endorsement.

Big brother, it's too much to discharge with a current of 10A. 20Ah just represents the battery capacity, is it really discharged with a current of 20A? It's all going to be a problem. It's best to use 5A. It doesn't damage the battery and it won't take too long.

Sorry, no one can stop the battery discharge voltage from dropping, but what exactly do you want to test WhatsMiner?

Asked the right person.

In accordance with the standards. YD T799-2005 Standard for Posts and Telecommunications

VRLA batteries for communications

The electric version of the DL T637-1997 standard "Valve Regulated Seal Lead-acid Battery Ordering.

Technical conditions of goods

The national standard GB standard "Fixed Valve Regulated Sealed Lead-Acid Battery".

The capacity of the three standards is approved according to the capacity of the 10-hour rate.

The method is: fully charged battery, suitable for 10A (current discharge to the termination voltage of a single battery, the time is greater than 10 hours, the battery is full capacity.)

Corresponding to this set of batteries, use 10A discharge for 10 hours, if the cell voltage is above the above, it is all full capacity. But this set of batteries has been in service for many years, and it is estimated that there is a lot of attenuation. According to the "China Mobile's Computer Room Management Regulations", a battery that has been running for many years is still qualified if it exceeds 80% capacity.

So as long as you put 8h, it's okay.

It is recommended to find a discharge meter (false load) to do the test, and it is recommended that Taiwan Qunling and Henan Brilliant have the function of automatically collecting voltage and analyzing the function.

If you are a maintenance or owner, the 12V100Ah battery will generally be guaranteed for more than 3 years, and you will directly find a supplier to test and discharge it for you. This method is absolutely convenient.

The battery discharge can be used for 3 hours, 5 hours, and 10 hours, and the current size of the discharge current is: 25A, 17A, and 10A

The discharge termination time is OK when a monomer arrives.

It is recommended to use a lower discharge current and use a 10-hour rate (10A).

I would like to ask again, how to calculate how much capacity the battery should be configured for the new communication room, and what is the plan formula? For example, 3 new wireless equipment cabinets (power 6600W), new transmission PTN equipment (power 2000W), new TD equipment (power 300W), 3 new TD-RRU (900W), power supply and battery matching starting with -48V.

From the beginning of the UPS discharge, the terminal voltage of each battery is measured and recorded every minute. If the fallback period is long, the time interval between measurement and recording can be appropriately extended. The general requirement is that more than 20-30 sets of data can be recorded for each discharge, so that the discharge capacity of each battery and its changes can be analyzed.

The discharge test generally requires the battery to be fully charged. Then discharge through the UPS with rated load, record the start discharge time, if you want to measure the voltage of the battery pack, measure it with a multimeter, and put it until the battery is protected and shut down. Record the time when the discharge was completed.

Every few minutes to measure the capacity of the battery It's very simple Hehe Good luck.