RELiON Battery InSight Series 48V 30Ah GC2 Lithium Battery

The RELiON Battery InSight Series 48V 30Ah GC2 Lithium Battery is a battery pack with a nominal voltage of 51.2 V, a nominal capacity of 30Ah, a continuous discharge of 100 A, a weight of 15.6 kg (34.4 lbs) and an ingress rating of IP67.

Last updated: 16 October 2026

2 recalls concern this battery. See recall details below.

What else this pack needs

Parts a source says are needed beyond the battery itself. Reported, not recommended — read the source beside each one and confirm it with the manufacturer before buying anything.

Unconfirmed
InSight 48V Spacer Battery — a GC2-sized block that fills a battery bay left empty
“GC2 Sized Spacer Battery”
Source: relionbattery.com/products/lithium/insight-48v-spacer-battery

Battery and charging

Voltage: 51.2 V
Rated charge cycles: More than 3,500 cycles at 80% depth of discharge
Nominal capacity: 30Ah
Maximum continuous discharge: 100 A maximum continuous, 45 A recommended
Recommended continuous discharge: 45 A recommended, against a 100 A maximum
Peak discharge: A ladder: the harder the surge, the shorter it is allowed
Recommended charging: 15 A recommended, up to 30 A continuous
Highest charge current it will take: ≤ 30A (1C)
Float voltage: 54 V float, 57 V peak charge
Charger settings, 48 V: 57 V peak, 54 V float

Battery care and safety

Ingress protection: IP67
Low-temperature charge protection: Will not charge below freezing
Short-circuit cut-off: 350 A, and it resets itself
Temperatures it may be stored in: 10°C to 35°C (50°F to 95°F)
Housing flammability rating: UL94 V-0
Humidity it is rated for: 10% to 95% RH non-condensing
Short-circuit current: 350A

Size and fit

Weight: 15.6 kg
Weight: 34.4 lbs
Overall dimensions: 260 x 180 x 276mm (10.2 x 7.1 x 10.9 in)
Terminals: M8 X 1.25 - 20
Group the maker sells it as: GC2, stated by the maker
Series and parallel connection: No — parallel only, up to ten

Product identifiers

The codes printed on the product and its packaging.

Model code: 48V030-GC2
Source: gov.uk/product-safety-alerts-reports-recalls/product-recall-relion-battery-insight-series-48v-30ah-2303-0032
“Model Number 48V030-GC2”

Recalls (2)

Most recalls cover only certain model years, serials or build dates — view each notice to check it against your own unit.

2023-03-14United KingdomThe product presents a serious risk of fire as a manufacturing fault can lead to corrosion across the ribbon cable terminal where it mates with the Printed Circuit Board (PCB) for the Battery Management System.View recall →
2023-03-02CPSCThe batteries can overheat, posing thermal burn and fire hazards."certain lots of the RELiON InSight Series® 48V lithium-ion batteries with, model number 48V030-GC2 and serial number ranges between RB48300020210314057- RB48300020210314729, RB48300020210330001- RB48300020210330715, and RB48300020210507012-RB48300020221016550."View recall →

Recalls and fire safety

What the manufacturer says went wrong: Overheating, which RELiON call rare
Units the manufacturer's notice covers: Australia and New Zealand are covered too, by RELiON's own notice
Remedy the manufacturer offers: Repair — the same battery back, with its remaining cycle life

Devices documented to run on this

The figures below line up. Neither manufacturer states that this pack runs this device — that is our reading of what each of them published separately, not a claim by either of them or a test by us. Even where every stated figure agrees, these can still decide it:

The device’s published draw is usually a peak, not the load it holds — the two numbers are not the same kind of quantity
A maker’s amp-hour minimum and their reserve-capacity minimum can give different answers about the same battery
Conditions attached to the chemistry, such as a speed limit for running on lithium
Whether the pack may be wired in series at all, where the device needs 24 or 36 volts
The charger, which both makers put conditions on and neither supplies
Case size, hold-down and terminal type — fitting the space is not being secured in it

Worth confirming with the device's manufacturer or a dealer before buying.

Rhodan Marine 5th Generation GPS Anchor (24, 36 or 48 V)Figures comparedView device: Rhodan Marine 5th Generation GPS Anchor (24, 36 or 48 V) →
One of these.
Only on the 48 volt model, and on published figures — InSight Series 48V 30Ah GC2 Lithium Battery is rated 100 A continuous and Rhodan rate this motor at up to 50 A — check yours before buying.
Rhodan state this system runs on 24, 36 or 48 volts depending on the model, and that its "system current draw will vary with thrust level up to a maximum of 50 amps at 100% thrust". This pack is 51.2 V nominal — what the industry sells as 48 volts — and its maker rate it at 100 A continuous as a maximum, and 45 A as their recommendation — so the motor's 50 amps is comfortably inside what the pack can do and 5 A above what its maker suggests for continuous use. The two figures are different kinds of number: Rhodan's is a peak draw and the pack's is a continuous rating, so the comparison runs the cautious way round. Rhodan also ask for a 60 amp breaker. The gap between RELiON's two figures is more than double, so which one a reader is shown changes the answer: against the maximum the motor draws half, and against the recommendation it is over. Rhodan's own display shows "THRUSTER CURRENT DRAW (Amps)" while the boat is running, so this is a figure an owner can watch rather than a calculation. Neither company has named the other and nobody has tested the pairing.
Source: relionbattery.com/products/lithium/insight-gc2-48v

Sources

RELiON — InSight 48V 30Ah GC2 deep cycle lithium batteryManufacturer model page
RELiON Battery
Source: relionbattery.com/products/lithium/insight-gc2-48v
Retrieved September 15, 2026
Product Recall | RELiONArchived document
Source: relionbattery.com/product-recall-us
Retrieved September 15, 2026
Product Recall APAC | RELiONArchived document
Source: relionbattery.com/product-recall-apac
Retrieved September 15, 2026