
CNB 76 - Ender Pearl
More than double the capacity: 900 AH lithium in 24V

CNB 76 - Ender Pearl
Perhaps Norway's coolest sailboat, now with Makspower lithium batteries.
The battery capacity was almost tripled and the weight reduced by almost 350 kg.
Makspower lithium batteries can be connected in series in 24 volts and up to 48 volts. It was crucial that the batteries could be connected in series.

What is installed?
Batteries: 18pcs Makspower 100Ah Lithium Mini batteries in 24V (900Ah/h)
Battery monitoring: 2pcs. Victron BMV-712 Battery monitor

This is what it looked like in the battery bank on the starboard side of the Ender Pearl.
Originally, there were 4x 200AH AGM batteries in each battery box, one on the starboard and one on the port side connected in 24 volts. Total 800AH in 24v.
Of the 800 ampere hours, approximately 40% could be utilized before the voltage becomes low and equipment stops working.
In the boat, there was already a great monitoring system for a number of functions. There are shunts on all the existing batteries. We took this into account and moved the sensors over to the Makspower batteries.
The existing monitoring system is still functioning normally but it does not read LiFePO4 batteries correctly.
Makspower has developed other batteries that are also very compact.
350kg lighter, and almost three times the battery capacity.

Port battery bank with new bank from Makspower fully installed.
The battery bank consists of 2×9 100AH 150BMS lithium batteries - one starboard and one port. A total of 1800AH in 12 volts, connected in series to 900AH in 24 volts.
The sensor for the existing monitoring system is in place and all functions are intact. The shunt for the Victron BMV 712 battery inverter is installed on the wall in the box.
Of the 900 ampere hours, almost all the stated capacity can be used.
Maximum capacity, minimum weight.
Why do this?
CoCo is the family's holiday home. Grandparents, children and grandchildren come here to relax, sleep undisturbed and enjoy boating.
On board, there is an induction hob, oven and ordinary household appliances. To use this, the generator must be started. Generators create vibrations and turbulence in most boats. If the battery bank is large enough and the inverter capacity sufficient, food can be prepared without a sound.
The family can sleep undisturbed while eggs and bacon are fried, coffee is brewed, rolls are baked in the oven and everything is ready for breakfast, dinner or supper.