An important precondition for a battery’s overall performance is correct charging. If you don’t adhere to the steps indicated, you may damage your battery. The manufacturer or distributor of Lead Crystal batteries is not responsible for your battery’s failure if you don’t stick to the loading profiles stated.

 

A number of own Lead Crystal chargers have been developed specifically for Lead Crystal batteries. We recommend using these in combination with your battery. There are also chargers (which allow loading profiles to be set) that have been approved by the manufacturer, Betta Batteries. These chargers are listed at: www.leadcrystalbatteries.com. Elfa Elementenfabriek is available to answer any questions you may have, to provide advice and data on the settings. E-mail your questions or comments to This email address is being protected from spambots. You need JavaScript enabled to view it..

 

To make optimum use of the Lead Crystal batteries’ unique properties and to be able to avail yourself of the guarantee, Lead Crystal batteries have to be charged correctly. The guidelines for this deviate from those for regular lead-acid batteries (AGM, Gel, Open lead-acid, etc.). It is therefore essential that you read the manual before charging the batteries. As otherwise you may damage them. Adhere to the instructions and benefit from the unique advantages offered by Lead Crystal batteries. You can also use the Lead Crystal chargers to charge them. These automatically ensure that the right loading profile is employed. Then you don’t have to read the rest.

 

CNFJ, CNFT and HCNFJ batteries

There are 4 phases to charging Lead Crystal CNFJ/CNFT/HCNFJ batteries:

Phase 1: Boost (rapid charging)

 Determine the battery’s voltage and the ampere hours (C in Ah). 

 Charge with a voltage 0.3 to 0.5 times the number of ampere hours (C). I.e. charge a 40 Ah battery with 12 to 20 ampere (A).

 Charges in this phase: 2-volt batteries to 2.45 V, 6-volt batteries to 7.35 V and 12-volt batteries to 14.7 V.

 

Phase 2: Charge

Once the stated voltage has been reached, turn the charging power down by half (0.15 times C in Ah). The battery voltage will decrease. Charge the 2-volt batteries back up to 2.45 V, 6-volt batteries to 7.35 V and 12-volt batteries to 14.7 V.

 

Phase 3: Topping up

Once the voltage stated has been reached, turn the charging power down to 0.1 times C. The battery’s voltage will now be kept constant (resp. 2.45 V, 7.35 V and 14.7 V) while we slowly reduce the charging power to 0.02 times C of the battery. The battery is now 100% charged.

 

Phase 4: Maintenance charge

Reduce to 2.3 V, 6.9 V and 13.7 V respectively and a charging power of 0.01 times C (Ah) or a pulse charge. This enables the battery to retain its optimum charge.

 

EVFJ batteries

Charging Lead Crystal EVFJ batteries has 4 phases:

Phase 1: Boost (rapid charging)

      Determine the voltage and the ampere hours (C in Ah) of the battery. 

      Charge at 0.2 to 0.25 times C in Ah. I.e. 40 Ah batteries charged with 8 to 10 ampere (A).

     Charge in this phase: 6-volt batteries to 7.05 V, 8-volt batteries to 9.40 V and 12-volt batteries to 14.10 volt.

 

Phase 2: Charge

Once the voltage stated has been reached turn the charging power down by half (0.1 times C). The battery voltage will decrease. Charge the 6-volt batteries to 7.35 V, 8-volt batteries to 9.80 V and 12-volt batteries to 14.70 V.

 

Phase 3: Topping up

Once the voltage stated has been reached, turn down the charging power again. Now to 0.05 times C. Now we will keep the batteries’ voltage constant (resp. 7.35 V, 9.80 V and 14.70 V) whilst gradually reducing the charging power to 0.02 times C of the battery. The battery is now 100% charged.

Phase 4: Maintenance charge

Reduce the voltage to respectively 6.84 V, 9.12 V and 13.7 V with a charge of 0.01 times C (Ah) or a pulse charge. This enables the battery to retain its optimum charge.

 

Download more information about the charging technology for Lead Crystal batteries.

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