The protection circuit will not let a 4.35 volt charger fill it.I have 2 Samsung SDI 3Ah cells.I removed the protection circuit and now they can charge to 4.35 volts.
A few of the batteries from Samsung and LG sold by GB are rated 4.35v eg. Samsung ICR 32A, but GB never mention this in their product page while Fasttech clearly shown that this battery is rated 4.35v in their product page